Taxonomy of Protista explained

A protist is any eukaryotic organism (one with cells containing a nucleus) that is not an animal, plant, or fungus. The protists do not form a natural group, or clade, since they exclude certain eukaryotes with whom they share a common ancestor; but, like algae or invertebrates, the grouping is used for convenience. In some systems of biological classification, such as the popular five-kingdom scheme proposed by Robert Whittaker in 1969, the protists make up a kingdom called Protista, composed of "organisms which are unicellular or unicellular-colonial and which form no tissues". In the 21st century, the classification shifted toward a two-kingdom system of protists: Chromista (containing the chromalveolate, rhizarian and hacrobian groups) and Protozoa (containing excavates and all protists more closely related to animals and fungi).

The following groups contain protists. The clade Opisthokonta also contains the animals and the fungi, and the kingdom Archaeplastida also contains algae and plants.

Key to symbols used:

(P) = Paraphyletic taxon.

† = Extinct taxon.

? = Taxon of uncertain taxonomic position.

* = Taxon lacking molecular data.

[] = Synonyms and alternative names.

→ = Monotypic taxon.

Current classification

This article largely follows the efforts of the scientific community and the International Society of Protistologists to revise the taxonomy of protists in a manner that reflects their phylogeny and evolution, striving away from the use of historical paraphyletic taxa and relying exclusively on clades as the basis of the classification. The reference used for the general arrangement of groups is the publication Revisions to the Classification, Nomenclature and Diversity of Eukaryotes, published in 2019 by researcher Sina Adl and coauthors. Other studies are used for some specific groups of protists that have been revised after 2018, such as slime moulds, glaucophyte algae, arcellinid testate amoebae and planktonic foraminifera.

The following cladogram shows the relationships between the major groups of protists, as well as the kingdoms of animals, plants and fungi, according to the most recent phylogenetic analyses.

• Thecomonadea → Apusomonadida → Apusomonadidae : Amastigomonas, Multimonas, Podomonas, Catacumbia, Cavaliersmithia .
  • Apusomonadinae : Apusomonas [''Rostromonas'' {{au|Karpoff & Zhukov 1980}}], Manchomonas .
  • Thecamonadinae : Chelonemonas, Karpovia, Singekia, Thecamonas .
• Breviatea → Breviatida → Breviatidae : Breviata, Lenisia, Pygsuia, Subulatomonas .

• Nucletmycea [Holomycota {{au|Liu et al. 2009}}]
  • Rotosphaerida [Cristidiscoidida {{au|Page 1987, Cavalier-Smith 1993, 1998}}; Nucleariidae {{au|Patterson 1983, 1999}}]. Fonticula, Nuclearia, Parvularia, Pompholyxophrys, Lithocolla, ?Vampyrellidium*, ?Elaeorhanis*, ?Pinaciophora*, ?Rabdiophrys*, ?Rabdiaster*, ?Thomseniophora*.^[1]
  • Fungi . Excluded from protists.
• Holozoa . Incertae sedis: Tunicaraptor, Bicellum .
  • Ichthyosporea [Mesomycetozoea {{au|Mendoza et al. 2002}}]
    • Dermocystida [Rhinosporidaceae {{au|Mendoza et al. 2001}}]. Amphibiocystidium, Amphibiothecum, Chromosphaera, Dermocystidium, Rhinosporidium, Sphaerothecum.
    • Ichthyophonida [Ichthyophonae {{au|Mendoza et al. 2001}}; Amoebidiidae {{au|Reeves 2003}}]. Abeoforma, Amoebidium, Anurofeca, Astreptonema, Caullerya, Creolimax, Eccrinidus, Enterobryus, Enteropogon, Ichthyophonus, Palavascia, Pseudoperkinsus, Psorospermium, Sphaeroforma.
      • • Pluriformea Corallochytrium
    • Syssomonas
  • Filasterea . Capsaspora, Ministeria, Pigoraptor, Txikispora.
  • Choanozoa [Choanozoa {{au|Cavalier-Smith et al. 1991}} (P)]
    • Choanoflagellata [Craspedomonadina {{au|Stein 1878}}; Craspedomonadaceae {{au|Senn 1900}}; Craspedophyceae {{au|Chadefaud 1960}}; Craspédomonadophycidées {{au|Bourrelly 1968}}; Craspedomonadophyceae {{au|Hibberd 1976}}; Choanomonadea {{au|Krylov et al. 1980}}; Choanoflagelliida {{au|Lee, Hutner & Bovee 1985}}; Choanoflagellatea {{au|Cavalier-Smith 1997 emend. Cavalier-Smith 1998}}; Choanomonada {{au|Adl et al. 2005}}].
      • • • • • • Craspedida Salpingoecidae . Astrosiga, Aulomonas, Barroeca,^[2] Choanoeca, Cladospongia, Codonocladium, Codonosigopsis, Codosiga [''[[Codonosiga]]], Desmarella [''[[Codonodesmus]]; Kentrosiga], Dicraspedella, Diploeca, Diplosiga, Diplosigopsis, Hartaetosiga, Kentia, Lagenoeca, Microstomoeca, Monosiga, Mylnosiga, Pachysoeca, Proterospongia, Salpingoeca, Salpingorhiza, Sphaeroeca, Stagondoeca, Stelexomonas, Stylochromonas.
                • Acanthoecida Acanthoecidae . Acanthoeca, Enibas, Helgoeca, Polyoeca, Savillea.
        • Stephanoecidae . Acanthocorbis, Amoenoscopa, Apheloecion, Bicosta, Calliacantha, Calotheca, Campanoeca, Campyloacantha, Conion, Cosmoeca, Crinolina, Crucispina, Diaphanoeca, Didymoeca, Kakoeca, Monocosta, Nannoeca, Parvicorbicula, Platypleura, Pleurasiga, Polyfibula, Saepicula, Saroeca, Spinoeca, Spiraloecion, Stephanacantha, Stephanoeca, Syndetophyllum.
    • Metazoa [Animalia {{au|Linnaeus 1758}}; Eumetazoa {{au|Bütschli 1910}}]. Excluded from protists.

Incertae sedis Amoebozoa: Belonocystis, Boveella, Biomyxa, Corallomyxa, Gibbodiscus, Hartmannia, Malamoeba, Malpighamoeba, Microglomus, Oscillosignum, Pseudothecamoeba, Rhabdamoeba, Schoutedamoeba, Stereomyxa, Subulamoeba, Thecochaos, Triaenamoeba, Unda.

• Corycida ["Corycidia"]
  • Trichosida → Trichosphaeriidae [Trichosidae {{au|Möbius 1889}}]: Trichosphaerium [''Atrichosa'' {{au|Cavalier-Smith et al. 2016}}].
  • Microcoryciidae : Amphizonella, Diplochlamys, Microcorycia, Parmulina, Penardochlamys, Zonomyxa .
• Echinamoebia → Echinamoebida .
  • Echinamoebidae : Echinamoeba, Micriamoeba .
  • Vermamoebidae : Vermamoeba .
    • • • • Elardia Leptomyxia → Leptomyxida Leptomyxidae : Leptomyxa .
    • Rhizamoebidae : Rhizamoeba .
    • Flabellulidae : Flabellula ^[3] [includes ''[[Paraflabellula]] ].
    • Gephyramoebidae : Gephyramoeba .
      • • Eulobosia Arcellinida . Incertae sedis taxa: Acipyxis, Apolimia, Argynnia, Armipyxis, Conicocassis, Cornuapyxis, Ellipsopyxella, Ellipsopyxis, Erugomicula, Frenopyxis, Geamphorella, Geoplagiopyxis, Geopyxella, Hoogenraadia, Jungia, Lagenodifflugia, Lamptopyxis, Lamtoquadrula, Leptochlamys, Maghrebia, Meisterfeldia, Microquadrula, Nabranella, Oopyxis, Paracentropyxis, Paraquadrula, Pentagonia, Physochila, Planhoogenraadia, Pomoriella, Pontigulasia, Prantlitina, Proplagiopyxis, Protoplagiopyxis, Protocucurbitella, Pseudawerintzewia, Pseudonebela, Schoenbornia, Sexangularia, Suiadifflugia, Trigonopyxis, Wailesella .
          • • • • Phryganellina Phryganellidae : Phryganella .
        • Cryptodifflugiidae : Cryptodifflugia .
      • Organoconcha → Microchlamyiidae : Microchlamys [''Pseudochlamys'' {{au|Claparède & Lachmann 1859}}], Spumochlamys, Pyxidicula .
        • • • • • Glutinoconcha Volnustoma → Heleoperidae : Heleopera, Metaheleopera .
        • Hyalospheniformes → Hyalospheniidae : Alabasta, Alocodera, Apodera, Certesella, Cornutheca, Gibbocarina, Hyalosphenia, Longinebela, Mrabella, Nebela, Padaungiella, Planocarina, Porosia, Quadrulella .
        • Excentrostoma → Centropyxidae [including [[Plagiopyxidae]]]: Awerinzewia, Bullinularia, Centropyxis, Frenopyxis,^[4] Golemanskia, Plagiopyxis .
        • Cylindrothecina → Cylindrifflugiidae : Cylindrifflugia .
          • • • • • • Longithecina Difflugiidae : Difflugia, Zivkovicia .
          • Lesquereusiidae : Lesquereusia .
            • • • • • Sphaerothecina Arcellidae : Arcella, Galeripora .
          • Netzeliidae : Cucurbitella, Cyclopyxis, Netzelia .
            • • • • • • Euamoebida Amoebina Amoebidae . Amoeba, Chaos, Polychaos, Parachaos, Trichamoeba, Deuteramoeba, Hydramoeba
        • Hartmannellidae . Cashia, Copromyxa, Copromyxella, Glaeseria, Hartmannella, Ptolemeba, Saccamoeba
          • • • • Nolandina Nolandellidae . Nolandella.

• Variosea
  • Angulamoeba
  • Arboramoeba
  • Darbyshirella
  • Dictyamoeba
  • Ischnamoeba
  • Heliamoeba
  • Filamoeba
  • Phalansterium .
  • Flamellidae .^[5] Flamella, Telaepolella.
  • Protosteliida . Protostelium [incl. ''[[Planoprotostelium]]].
    • • • Fractovitellida Acramoebidae . Acramoeba.
    • Schizoplasmodiidae . Ceratiomyxella, Nematostelium, Schizoplasmodium.
    • Soliformoviidae . Soliformovum, Grellamoeba
  • Cavosteliida . Cavostelium, Schizoplasmodiopsis, Tychosporium.
  • Holomastigida . Artodiscus, Multicilia.
• Eumycetozoa [Mycetozoa {{small|de Bary 1859 ex Rostafinski 1873}}; Macromycetozoa {{au|Fiore-Donno 2010}}]
  • Dictyostelia [Dictyosteliomycetes {{small|Doweld 2001}}]. Acytostelium, Cavenderia, Coremiostelium, Dictyostelium, Heterostelium, Polysphondylium, Raperostelium, Rostrostelium, Speleostelium, Tieghemostelium, Synstelium, ?Coenonia.
  • Protosporangiida [Ceratiomyxea {{small|Leontyev, Stephenson, Novozhilov & Shchepin 2019}}; Ceratiomyxomycetes {{small|D. Hawksw., B. Sutton & Ainsw. 2019}}]
    • Ceratiomyxa
    • Protosporangiidae . Clastostelium, Protosporangium.
  • Myxogastria [Myxogastrea {{small|Cavalier-Smith 1993}}; Myxomycetes {{small|Link 1833, sensu Haeckel 1866}}]
    • Lucisporomycetidae [Lucisporinia {{small|Leontyev, Stephenson, Novozhilov & Shchepin 2019}};<ref name="Myxomycetes"/> Lucisporidia {{au|Cavalier-Smith 2013}}]. Incertae sedis genera: Arcyriatella, Calonema, Minakatella, Trichioides.
      • • • • • • • • • • • • Cribariidia Cribariales Cribariaceae . Cribaria, Lindbladia, Licaethalium.
                            • Trichiidia Reticulariales Reticulariaceae . Alwisia, Lycogala, Reticularia, Tubifera.
                    • Liceales Liceaceae . Licea, Listerella.
                    • Trichiales Dianemataceae . Calomyxa, Dianema, Dictydiaethalium, Prototrichia.
          • Trichiaceae . Hemitrichia [incl. ''[[Trichia decipiens]]], Arcyria [incl. ''[[Arcyodes]]], Perichaena, Trichia [incl. ''[[Cornuvia]], Metatrichia, Oligonema].
    • Columellomycetidae [Collumellinia {{small|Leontyev, Stephenson, Novozhilov & Shchepin 2019}};<ref name="Myxomycetes"/> Columellidia {{au|Cavalier-Smith 2015}}]. Incertae sedis genera: Diachea, Echinosteliopsis, Leptoderma, Paradiachea, Protophysarum, Trabrooksia, Willkommlangea.
      • • • • • • • • • • • • Echinosteliidia Echinosteliales Echinosteliaceae . Barbeyella, Echinostelium [incl. ''[[Semimorula]]].
                            • Stemonitidia Clastodermatales Clastodermataceae . Clastoderma.
                    • Meridermatales Meridermataceae . Meriderma.
                    • Stemonitidales Stemonitidaceae . Macbrideola, Stemonitis, Symphytocarpus.
          • Amaurochaetaceae . Comatricha, Stemonaria, Stemonitopsis, Amaurochaete, Brefeldia, Enerthenema, Paradiacheopsis.
            • • • • • Physarales Tasmaniomyxa umbilicata ^[6]
          • Lamprodermataceae . Lamproderma [incl. ''[[Dichaeopsis]], Colloderma, Elaeomyxa], ?Collaria.
          • Didymiaceae – Diderma, Didymium, Lepidoderma, Mucilago.
          • Physaraceae . Craterium, Leocarpus, Fuligo, Physarum, Physarella, Physarina, Kelleromyxa, Badhamia.
    • Cutosea → Squamocutida Squamamoebidae : Armaparvus, Squamamoeba .
  • Sapocribridae : Sapocribrum .
  • Idionectidae : Idionectes .^[7]
• Archamoebea
  • Tricholimacidae . Tricholimax.
  • Entamoebidae . Entamoeba.
  • Rhizomastixidae . Rhizomastix.
  • Mastigamoebida . Endamoeba, Endolimax, Iodamoeba, Mastigamoeba, Mastigina.
  • Pelobiontida [Pelomyxidae {{au|Schulze 1877}}]. Mastigella, Pelomyxa

• Flabellinia
  • • • • Dermamoebida Dermamoebidae . Dermamoeba, Paradermamoeba, ?Mycamoeba, Coronamoeba.
    • Mayorellidae . Mayorella.
  • Thecamoebida . Sappinia, Stenamoeba, Stratorugosa, Thecamoeba, Thecochaos.
  • Dactylopodida . Cunea, ?Janickina,* Korotnevella, Neoparamoeba, Paramoeba, Pseudoparamoeba, Vexillifera.
  • Vannellida [Vannellidae {{au|Bovee 1979}}]. Clydonella, Lingulamoeba, Paravannella, Pessonella*, Ripella, Vannella.
• Stygamoebida (P). Stygamoeba, Vermistella.
• Centramoebia
  • Acanthopodida [Centramoebida {{au|Rogerson & Patterson 2002, sensu Tice et al. 2016}}<ref name="Tice2016"/>]. Acanthamoeba, Balamuthia, Luapeleamoeba, Protacanthamoeba, Dracoamoeba, Vacuolamoeba.
  • Himatismenida . Cochliopodium, Ovalopodium, Parvamoeba.
  • Pellitida . Endostelium, Gocevia, Paragocevia*, Pellita.

• Microhelida → Microheliellidae : Microheliella
• Telonemia → Telonemea → Telonemidae : Arpakorses,^[8] Lateronema, Telonema .

• Glaucophyta [Glaucocystaceae {{au|West 1904}}; Glaucocystophyta {{au|Kies and Kremer 1986}}; Glaucoplantae {{au|Marin & Melkonian in Li et al. 2020}}]. Incertae sedis taxa: Archaeopsis, Chalarodora, Glaucocystopsis, Peliaina, Strobilomonas.
  • Cyanophorales : Cyanophora.
  • Glaucocystales : Glaucocystis.
  • Gloeochaetales : Cyanoptyche, Gloeochaete.
• Picozoa [Picobiliphytes {{au|Not et al. 2007}}]: Picomonas.
• Rhodelphidia : Rhodelphis .^[9]
• Rhodophyceae [Rhodophyta {{au|Wettstein 1901}}; Rhodoplantae {{au|Saunders and Hommersand 2004 emend. Adl et al. 2005}}]
• Chloroplastida [Viridiplantae {{au|Cavalier-Smith 1981}}; Chlorobionta {{au|Jeffrey 1982, emend. Bremer 1985, emend. Lewis and McCourt 2004}}; Chlorobiota {{au|Kendrick and Crane 1997}}]
  • Prasinodermophyta ^[10]
    • Prasinodermophyceae → Prasinodermales → Prasinodermaceae : Prasinoderma .
      • • • • Palmophyllophyceae Palmophyllales → Palmophyllaceae : Palmophyllum, Verdigellas, Palmoclathrus .^[11]
      • Prasinococcales → Prasinococcaceae : Prasinococcus .
      • Chlorophyta Streptophyta [Charophyta ]
    • Chlorokybophyceae → Chlorokybales → Chlorokybaceae : Chlorokybus .^[12]
    • Mesostigmatophyceae [Mesostigmata {{au|Turmel et al. 2002}}] → Mesostigmales → Mesostigmataceae : Mesostigma .
    • Klebsormidiophyceae ^[13]
      • Klebsormidiales → Klebsormidiaceae : Klebsormidium, Interfilum, Streptofilum .
      • Entransiales → Entransiaceae : Entransia .
      • Hormidiellales → Hormidiellaceae : Hormidiella, Streptosarcina .
        • • • • • • • • • • • Phragmoplastophyta Charophyceae Coleochaetophyceae Anydrophyta ^[14]
        • Zygnematophyceae ^[15]
          • Serritaeniales → Serritaeniaceae : Serritaenia
          • Zygnematales → Zygnemataceae : Cylindrocystis, Mesotaenium, Mougeotia, Zygnema, Zygnemopsis .
          • Desmidiales → Desmidiaceae : Bambusina, Closterium, Cosmarium, Cosmocladium, Desmidium, Euastrum, Micrasterias, Netrium, Nucleotaenium, Onychonema, Penium, Phymatodocis, Planotaenium, Pleurotaenium, Staurastrum, Staurodesmus, Xanthidium, etc.
          • Spirogyrales : Spirogyra
        • Embryophyta [Plantae {{au|Haeckel 1866}}] (excluded from protists)

Stramenopiles incertae sedis:

• Environmental clades MAST-21, MAST-25
• Platysulcidae . Platysulcus.
• Kaonashiidae . Kaonashia.^[16]

• Opalozoa . Incertae sedis: Cantina, Rictus, environmental clades MAST-16, MAST-22 and MAST-24 .
  • • • • Placidozoa Placididea . Allegra, Haloplacidia, Pendulomonas, Placidia, Placilonga, Suigetsumonas, Wobblia.
    • Nanomonadea [clade MAST-3]. Incisomonas, Solenicola.
    • Opalomonadea [clade MAST-12]. No described species.
    • Opalinata [Slopalinida {{au|Patterson 1985}}]
      • Proteromonadea . Karotomorpha, Proteromonas.
      • Opalinea . Cepedea, Opalina, Protoopalina, Protozelleriella, Zelleriella.
      • Blastocystis
  • Bicosoecida . Adriamonas, Anoeca, Bicosoeca, Caecitellus, Cafeteria, Cafileria, Cyathobodo, Filos, Halocafeteria, Nanum, Paramonas, Pseudobodo, Pseudodendromonas, Otto, Regin.
• Sagenista . Incertae sedis: environmental clades MAST-4, MAST-7, MAST-8, MAST-9, MAST-10, MAST-11 and MAST-20 .
  • • • • Labyrinthulomycetes Amphitremida . Amphitrema, Archerella, Diplophrys, Paramphitrema.
    • Amphifilida . Amphifila, Fibrophrys, Sorodiplophrys.
    • "Oblongichytrida" . Oblongichytrium.
    • Labyrinthulida . Aplanochytrium, Labyrinthula, Stellarchytrium.
    • Thraustochytrida . Althornia, Aurantiochytrium, Botryochytrium, Japanochytrium, Monorhizochytrium, Parietichytrium, Phycophthorum,^[17] Schizochytrium, Sicyoidochytrium, Thraustochytrium, Ulkenia.
  • Pseudophyllomitidae [clade MAST-6]. Pseudophyllomitus.

• Gyrista incertae sedis: environmental clades MAST-1, MAST-2 and MAST-23 .
• Pseudofungi [Heterokontimycotina {{au|M.W. Dick 1976}}]
  • Bigyromonadea ^[18]
    • Developea . Cubaremonas, Develocanicus, Develocauda, Developayella, Develorapax, Mediocremonas.
    • Pirsoniales .^[19] Bordeauxia, Bullionia, Feodosia, Koktebelia, Noirmoutieria, Pirsonia.
  • Hyphochytriales . Anisolpidium, Canteriomyces.
    • • • • Anisolpidiaceae Hyphochytridiomycetaceae . Hyphochytrium.
    • Rhizidiomycetaceae . Latrostium, Rhizidiomyces, Rhizidiomycopsis.
  • Oomycetes [Peronosporomycetes {{au|Dick 2001}}]. Incertae sedis genera: Atkinsiella, Ciliomyces, Crypticola, Ectrogella, Eurychasma, Halodaphnea, Haliphthoros, Haptoglossa, Lagena, Lagenisma, Olpidiopsis, Pontisma, Pythiella, Rozellopsis, Sirolpidium.
    • Saprolegnialean lineage . Achlya, Aphanomyces, Aplanopsis, Apodachlya, Aquastella, Geolegnia, Leptomitus, Newbya, Pythiopsis, Protoachlya, Salisapilia, Saprolegnia, Thraustotheca.
    • Peronosporalean lineage . Albugo, Bremia, Chlamydomyzium, Halophytopthora, Hyaloperonospora, Lagenidium, Myzocytiopsis, Peronospora, Plasmopara, Pythium, Pseudoperonospora, Phytophthora, Phytopythium, Pustula.
• Ochrophyta [Heterokontophyta {{small|Guiry, R.A.Andersen & Moestrup 2023}}]
  • Chrysista . Incertae sedis: environmental lineages MOCH-3 and MOCH-5, Chrysowaernella, Aurearena.
    • SII clade
      • Olisthodiscophyceae . Olisthodiscus.
      • Pinguiophyceae . Glossomastix, Phaeomonas, Pinguiochrysis, Pinguiococcus, Polypodochrysis.
        • • • • • Limnistia Chrysophyceae . Incertae sedis: Chryososaccus, Chrysosphera, Cyclonexis, Lygynion, Phaeoplaca.
          • Chromulinales . Chromulina, Chrysomonas.
          • Hibberdiales . Hibberdia.
          • Ochromonadales . Spumella, Pedospumella, Ochromonas.
          • Paraphysomonadida . Paraphysomonas.
          • Synurales . Chrysodidymus, Mallomonas, Synura, Tesselaria.
            • • • • • • • • • • • • Eustigmatophyceae Eustigmatales Paraeustigmatos
            • Eustigmataceae . ?Ellipsoidion, Chlorobotrys, Eustigmatos, Pseudocharaciopsis, Vischeria.
            • Monodopsidaceae . Microchloropsis, Monodopsis, Nannochloropsis, Pseudotetraedriella.
            • Neomonodaceae . ?Botryochloropsis, Characiopsella, Munda, Neomonodus, Pseudellipsoidion.
          • Goniochloridales . Goniochloris, Pseudostaurastrum, Tetraedriella, Trachydiscus, Vacuoliviride.
        • Picophagea [Synchromophyceae {{au|S.Horn & C.Wilhelm 2007}}]. Chlamydomyxa, Chrysopodocystis, Guanochroma, Leukarachnion, Picophagus, Synchroma.
    • SI clade
      • • • • • • Raphidomonadea Raphidophycidae [Chattonellales {{au|Throndsen in Tomas 1993 emend. Yamaguchi, Nakayama, Murakami & Inouye 2010}}; Vacuolariales {{au|Shameel, 2001}}]. Chattonella, Fibrocapsa, Goniostomum, Haramonas, Heterosigma, Merotricha, Vacuolaria.
                  • • Raphopoda Commatiida [Commatiidae {{au|Cavalier-Smith 2013}}]. Commation.
                      • • Actinophryida Actinosphaerina [Actinosphaeriidae {{au|Cavalier-Smith 2013}}]. Actinosphaerium.
                          • • Actinophryina Actinophryidae . Actinophrys.
              • Helioraphidae . Heliorapha.
      • PX clade
        • Chrysomerophyceae . Antarctosaccion, Chrysomeris, Chrysowaernella, Giraudyopsis, Rhamnochrysis, Tetrasporopsis.
        • Chrysoparadoxophyceae . Chrysoparadoxa.
          • • • • • • Phaeophyceae Ascoseirales . Ascoseira.
          • Desmarestiales . Arthrocladia, Desmarestia (P), Himantothallus, Phaeurus.
          • Dictyotales . Dictyota, Dilophus, Lobophora, Padina, Stypopodium, Taonia, Zonaria.
          • Discosporangiales . Choristocarpus, Discosporangium.
          • Ectocarpales . Adenocystis, Acinetospora, Asterocladon, Asteronema, Chordaria, Ectocarpus, Scytosiphon.
          • Fucales . Ascophyllum, Bifurcaria, Cystoseira, Druvillaea, Fucus, Hormosira, Sargassum, Turbinaria.
          • Ishigeales [Ishigeacea {{au|Okamura 1935}}]. Ishige.
          • Laminariales . Akkesiophycus, Alaria, Chorda, Costaria, Laminaria, Lessonia, Pseudochoda.
          • Nemodermatales . Nemoderma.
          • Onslowiales . Onslowia.
          • Ralfsiales . Lithoderma, Neoralfsia, Pseudolithoderma, Ralfsia.
          • Scytothamnales . Scytothamnus, Splachnidium, Stereocladon.
          • Sphacelariales . Chaetopteris, Halopteris, Stypocaulon, Sphacelaria, Verosphacella.
          • Sporochnales . Bellotia, Carpomitra, Nereia, Sporochonus, Tomaculopsis.
          • Syringodermatales . Syringoderma.
          • Tilopteridales . Cutleria, Halosiphon, Haplospora, Phaeosiphoniella, Phyllaria, Tilopteris.
            • • • • • Phaeosacciophyceae Phaeosaccionaceae . Phaeosaccion.
          • Tetrasporopsidaceae . Tetrasporopsis, Psammochrysis, Chrysomeris.
            • • • • • Phaeothamiophyceae Phaeothamniales . Phaeothamnion.
          • Pleurochloridales . Pleurochloridella.
        • Schizocladiophyceae . Schizocladia.
        • Xanthophyceae [Heterokontae {{au|Luther 1899}}; Heteromonadea {{au|Leedale 1983;}} Xanthophyta {{au|Hibberd 1990}}]
          • Tribonematales . Botrydium, Bumilleriopsis, Characiopsis, Chloromeson, Heterococcus, Monadus, Ophiocytium, Sphaerosorus, Tribonema, Xanthonema.
          • Vaucheriales . Vaucheria.
  • Diatomista [SIII clade]. Incertae sedis: environmental clades MOCH-1, MOCH-2 and MOCH-4 .
    • Bolidophyceae [Parmales {{au|Booth & Marchant 1987}}]. Bolidomonas, Triparma, Tetraparma, Pentalamina.
    • Diatomeae [Bacillariophyta {{au|Haeckel 1878}}]
      • • • • • • Leptocylindrophytina Leptocylindrophyceae . Leptocylindrus, Tenuicylindrus.
        • Corethrophyceae . Corethron.
      • Ellerbeckiophytina . Ellerbeckia.
      • Probosciophytina . Proboscia.
      • Melosirophytina . Aulacoseira, Melosira, Hyalodiscus, Stephanopyxis, Paralia, Endictya.
      • Coscinodiscophytina . Actinoptychus, Coscinodiscus, Actinocyclus, Asteromphalus, Aulacodiscus, Stellarima.
      • Rhizosoleniophytina . Guinardia, Rhizosolenia, Pseudosolenia.
      • Arachnoidiscophytina . Arachnoidiscus.
        • • • • • • • • • • • Bacillariophytina Mediophyceae Chaetocerotophycidae . Chaetoceros, Bacteriastrum, Dactyliosolen, Cerataulina, Hemiaulus, Eucampia, Acanthoceras, Urosolenia, Terpsinoë, Hydrosera.
          • Lithodesmiophycidae . Lithodesmium, Lithodesmioides, Helicotheca, Bellerochea, Ditylum.
          • Thalassiosirophycidae . Thalassiosira, Lindavia, Cyclotella, Stephanodiscus, Cyclostephanos, Discostella, Bacteriosira, Skeletonema, Detonula.
          • Cymatosirophycidae . Cymatosira, Minutocellus, Papiliocellulus, Leyanella, Extubocellulus, Plagiogrammopsis, Campylosira, Brockmanniella, Pierrecomperia.
          • Odontellophycidae . Odontella, Triceratium, Cerataulus, Pleurosira, Pseudauliscus, Amphitetras, Trieres, Mastodiscus.
          • Chrysanthemodiscophycidae . Chrysanthemodiscus, Biddulphiopsis, Trigonium, Isthmia, Lampriscus, Stictocyclus, Ardissonea, Climacosphenia, Toxarium.
            • • • • • Biddulphiophyceae Biddulphiophycidae . Biddulphia.
          • Attheya
            • • • • • Bacillariophyceae Striatellaceae . Striatella, Pseudostriatella.
          • Urneidophycidae . (P?) Plagiogramma, Dimeregramma, Rhaphoneis, Delphineis, Psammoneis, Bleakeleya, Asterionellopsis.
          • Fragilariophycidae . Fragilaria, Synedra, Tabellaria, Asterionella, Diatoma, Tabularia, Cyclophora, Astrosyne, Licmophora, Rhabdonema, Grammatophora, Staurosira, Thalassionema.
          • Bacillariophycidae . Eunotia, Achnanthes, Bacillaria, Nitzschia, Pseudonitzschia, Cylindrotheca, Navicula, Seminavis, Haslea, Pleurosigma, Gyrosigma, Achnanthidium, Cocconeis, Frustulia, Diploneis, Sellaphora, Pinnularia, Gomphonema, Cymbella, Didymosphenia, Phaeodactylum, Amphora, Entomoneis, Epithemia, Surirella, etc.
            • • • • • • • • • Naviculales Stauroneidaceae . Craticula, Dorofeyukea, Fistulifera, Karayevia, Madinithidium, Parlibellus, Prestauroneis, Stauroneis, Schizostauron.^[20]
    • Dictyochophyceae [Silicoflagellata {{au|Lemmermann, 1901}}]
      • Dictyochales [Dictyochida {{au|Borgert, 1891}}; Dictyochaceae {{au|Lemmermann, 1901}}]. Dictyocha.
      • Florenciellales . Florenciella, Verrucophora.
      • Pedinellales [Ciliophryida {{au|Febre-Chevalier, 1985}}; Actinomonadaceae {{au|Kent, 1880}}]. Actinomonas, Apedinella, Ciliophrys, Mesopedinella, Palatinella, Pedinella, Pseudopedinella, Pteridomonas.
      • Rhizochromulinales [Rhizochromulinaceae {{au|O'Kelly & Wujek, 1994}}]. Rhizochromulina.
        • • • Pelagophyceae Pelagomonadales . Aureococcus, Pelagococcus, Pelagomonas.
              • • Sarcinochrysidales Sarcinochrysidaceae . Ankylochrisis, Arachnochrysis, Aureoscheda, Aureoumbra, Nematochrysopsis, Pelagospilus, Pulvinaria, Sarcinochrysis, Sargassococcus.
        • Chrysocystaceae . Chrysocystis, Chrysoreinhardia, Sungminbooa.
      • Plocamiomonadales . Plocamiomonas.^[21]

• Colponemida (P)
  • Colponemidia . Colponema.
  • Acavomonidia . Acavomonas.
  • Neocolponema
  • Loeffela ^[22]
  • Palustrimonas

• Colpodellida ["chrompodellids" {{au|Janouškovec et al. 2015}};<ref>{{cite journal | url=https://doi.org/10.1073%2FPNAS.1423790112 | doi=10.1073/PNAS.1423790112 | title=Factors mediating plastid dependency and the origins of parasitism in apicomplexans and their close relatives | date=2015 | last1=Janouškovec | first1=Jan | last2=Tikhonenkov | first2=Denis V. | last3=Burki | first3=Fabien | last4=Howe | first4=Alexis T. | last5=Kolísko | first5=Martin | last6=Mylnikov | first6=Alexander P. | last7=Keeling | first7=Patrick J. | journal=Proceedings of the National Academy of Sciences | volume=112 | issue=33 | pages=10200–10207 | pmid=25717057 | pmc=4547307 | bibcode=2015PNAS..11210200J }}</ref> Chromeridophyta {{au|R.B.Moore et al., 2008}}; Colpodellophyceae {{au|Molinari & Guiri 2023}}; Chromerida {{au|Guiry 2024}}].^[23] Incertae sedis: Piridium.^[24]
  • Vitrellaceae . Vitrella.
  • Colpodellaceae [Colpodellidae {{au|Simpson & Patterson 1996}}]. Colpodella, Chilovora, Voromonas.
  • Chromeraceae . Chromera.
  • Alphamonaceae . Alphamonas.
• Perkinsozoa [Perkinsea {{au|Levine 1978}}]. Incertae sedis genus: Phagodinium, Rastrimonas.
  • Maranthos ^[25]
  • Pararosariidae . Pararosarium.^[26]
  • Parviluciferaceae . Dinovorax, Parvilucifera, Snorkelia,^[27] Tuberlatum.^[28]
  • Perkinsidae . Perkinsus.
  • Xcellidae . Cryoxcellia,^[29] Gadixcellia, Notoxcellia,^[30] Salmoxcellia,^[31] Xcellia.
• Dinoflagellata . Incertae sedis genera: free-living (Adenoides, Akashiwo, Amphidiniella, Ankistrodinium, Apicoporus, Archaeosphaerodiniopsis, Bispinodinium, Bysmatrum, Cabra, Cladopyxis, Crypthecodinium, Cucumeridinium, Dactylodinium, Dicroerisma, Gloeodinium, Grammatodinium, Gynogonadinium, Gyrodiniellum, Halostylodinium, Heterodinium, Moestrupia, Paragymnodinium, Phytodinium, Plagiodinium, Planodinium, Pileidinium, Pseudadenoides, Pseudothecadinium, Pyramidodinium, Rhinodinium, Roscoffia, Sabulodinium, Sphaerodinium, Spiniferodinium, Testudodinium, Thecadinium, Thecadiniopsis, Togula) and parasitic Blastodiniales [no longer valid] (Amyloodinium, Apodinium, Cachonella, Caryotoma, Crepidoodinium, Haplozoon, Oodinium, Myxodinium, Piscinoodinium, Protoodinium, Rhinodinium, Schyzochitriodinium, Stylodinium).
  • Psammosa ^[32]
  • Oxyrrhis [Oxyrrhinaceae {{au|Sournia 1984}}]
  • Eleftheros
  • Ichthyodinida [environmental Marine Alveolate Group I]^[33]
    • Hobagellidae . Hobagella.^[34]
    • Euduboscquellidae . Euduboscquella, Dogelodinium, Keppenodinium.
    • Ichthyodiniidae . Ichthyodinium.
  • Syndiniales . Incertae sedis: Ellobiopsidae (Ellobiopsis, Thalassomyces).
    • Amoebophryidae [environmental Marine Alveolate Group II]. Amoebophrya.
    • Syndinidae [environmental Marine Alveolate Group IV]. Hematodinium, Syndinium, Solenodinium.
    • Sphaeriparaceae . Atlanticellodinium, Sphaeripara.
  • Noctilucales [Noctiluciphyceae {{au|Fensome et al. 1993}}]. Abedinium, Cachonodinium, Craspedotella, Cymbodinium, Kofoidinium, Leptodiscus, Noctiluca, Petalodinium, Pomatodinium, Scaphodinium, Spatulodinium.
    • • • • • • • Dinophyceae Gymnodiniphycidae Gymnodiniales sensu stricto. Barrufeta, Chytriodinium, Dissodinium, Erythropsidinium, Greuetodinium, Gymnodinium, Lepidodinium, Nematodinium, Nusuttodinium, Pellucidodinium, Polykrikos, Proterythropsis, Wangodinium,^[35] Warnowia.
      • Amphidinium sensu stricto
      • Gyrodinium sensu stricto
      • Kareniaceae . Brachidinium, Karenia, Karlodinium, Takayama.
      • Ceratoperidiniaceae . Ceratoperidinium, Kirithra.
      • Torodiniales . Kapelodinium, Torodinium.
        • • • • • • • • Levanderina Margalefidinium Cochlodinium sensu stricto
      • Ptychodiscales . Achradina, Amphilothus, Balechina, Ptychodiscus, Sclerodinium.
      • Borghiellaceae . Baldinia, Borghiella.
      • Tovelliaceae . Bernardinium, Esoptrodinium, Jadwigia, Tovellia.
      • Suessiaceae . Ansanella, Asulcocephalium, Biecheleria, Biecheleriopsis, Leiocephalium, Pelagodinium, Polarella, Prosoaulax, Protodinium, Symbiodinium, Yihiella.
        • • • Peridiniphycidae Gonyaulacales . Alexandrium, Amylax, Ceratium, Ceratocorys, Coolia, Fukuyoa, Fragilidium, Gambierdiscus, Goniodoma, Gonyaulax, Lingulodinium, Ostreopsis, Pentaplacodinium, Peridiniella, Protoceratium, Pyrocystis, Pyrodinium, Pyrophacus, Tripos.
      • Peridiniales . Amphidiniopsis, Archaeperidinium, Blastodinium*, Diplopelta, Diplopsalis, Diplopsalopsis, Herdmania, Niea, Oblea, Palatinus, Parvodinium, Peridinium, Peridiniopsis, Preperidinium, Protoperidinium, Qia, Vulcanodinium.
      • Thoracosphaeraceae . Aduncodinium, Amyloodinium, Apocalathium, Blastodinium, Chimonodinium, Cryptoperidiniopsis, Duboscquodinium, Ensiculifera, Laciniporus,^[36] Leonella, Luciella, Naiadinium, Paulsenella, Pentapharsodinium, Pfiesteria, Scrippsiella, Stoeckeria, Theleodinium, Thoracosphaera, Tintinnophagus, Tyrannodinium.
      • Podolampadaceae . Blepharocysta, Gaarderiella, Heterobractum, Lissodinium, Mysticella, Podolampas.
      • Kryptoperidiniaceae ["dinotoms"]. Blixaea, Durinskia, Galeidinium, Kryptoperidinium, Unruhdinium, etc.
      • Heterocapsaceae . Heterocapsa.
      • Amphidomataceae . Amphidoma, Azadinium.
      • Oxytoxaceae . Corythodinium, Oxytoxum.
      • Centrodiniaceae . Centrodinium.
    • Dinophysales . Amphisolenia, Citharistes, Dinofurcula, Dinophysis, Histioneis, Latifascia, Metadinophysis, Metaphalacroma, Ornithocercus, Oxyphysis, Parahistioneis, Phalacroma, Pseudophalacroma, Sinophysis, Triposolenia.
    • Prorocentrales . Mesoporus, Prorocentrum.
• Squirmida . Digyalum, Filipodium, Platyproteum.^{[37] [38]}
• Apicomplexa . Incertae sedis genera: Aggregata, Christalloidophora, Dobellia*, Echinococcidium*, Globidiellum*, Joyeuxella*, Rhabdospora*, Spermatobium*, Spiriopsis*, Spirogregarina*, Toxocystis*, Trophosphaera* .
  • ?Agamococcidiorida . Gemmocystis*, Rhytidocystis.
  • ?Protococcidiorida . Angeiocystis*, Coelotropha*, Grellia*, Eleutheroschizon*, Mackinnonia*, Myriosporides*, Myriospora*, Sawayella*.
  • Aconoidasida [Hematozoa {{au|Vivier 1982}}] (P)
    • Haemospororida . Dionisia*, Haemocystidium, Haemoproteus, Hepatocystis, Leucocytozoon, Mesnilium*, Nycteria, Parahaemoproteus, Plasmodium, Polychromophilus, Rayella*, Saurocytozoon*.
    • Piroplasmorida . Anthemosoma*, Babesia, Cytauxzoon, Echinozoon*, Haemohormidium*, Sauroplasma*, Serpentoplasma*, Theileria.
    • Nephromycida . Nephromyces, Cardiosporidium.
  • Conoidasida (P)
    • Coccidia (P)
      • Adeleorina . Adelea*, Adelina, Babesiosima*, Bartazoon*, Chagasella*, Cyrilia*, Dactylosoma, Desseria*, Ganapatiella*, Gibbsia*, Haemogregarina, Haemolivia, Hepatozoon, Ithania*, Karyolysus, Klossia, Klossiella*, Legerella*, Orcheobius*, Rasajeyna*.
      • Eimeriorina . Atoxoplasma, Barrouxia*, Besnoitia, Caryospora, Caryotropha, Choleoeimeria, Cyclospora, Cystoisospora, Defretinella*, Diaspora*, Dorisa*, Dorisiella*, Eimeria, Elleipsisoma*, Goussia, Hammondia, Hyaloklossia, Isospora, Lankesterella, Mantonella*, Merocystis, Neospora, Nephroisospora, Ovivora*, Pfeifferinella, Pseudoklossia, Sarcocystis, Schellackia, Selenococcidium*, Selysina*, Spirocystis*, Toxoplasma, Tyzzeria*, Wenyonella*.
    • Gregarinasina (P). Incertae sedis genera: Digyalum, Exoschizon .
      • Archigregarinorida (P). Meroselenidium, Merogregarina, Selenidium, Selenocystis, Veloxidium.
      • Eugregarinorida (P). Apolocystis*, Amoebogregarina, Ancora, Ascogregarina, Asterophora, Blabericola, Caliculium, Cephaloidophora, Colepismatophila, Cystobia*, Cystocephalus*, Difficilina, Diplauxis*, Enterocystis, Ganymedes, Geneiorhynchus, Gonospora, Gregarina, Heliospora, Hentschelia*, Hirmocystis*, Hoplorhynchus, Lankesteria, Lecudina, Leidyana, Lithocystis, Monocystella*, Monocystis, Nematopsis, Nematocystis*, Neoasterophora*, Paralecudina, Paraschneideria, Phyllochaetopterus, Pileocephalus*, Polyplicarium, Polyrhabdina, Porospora*, Prismatospora, Protomagalhaensia, Psychodiella, Pterospora, Pyxinia, Pyxinioides, Rhabdocystis*, Sphaerorhynchus*, Steinina, Stenophora, Stylocephalus, Sycia*, Syncystis, Thalicola*, Thiriotia, Trichotokara, Uradiophora*, Urospora, Xiphocephalus, Zygosoma*, and more.
      • Neogregarinorida . Apicystis, Aranciocystis, Caulleryella*, Coelogregarina*, Farinocystis*, Gigaductus*, Lipocystis*, Lipotropha*, Lymphotropha*, Machadoella*, Mattesia, Menzbieria, Ophryocystis, Schizocystis*, Syncystis, Tipulocystis*.
      • Cryptogregarinorida . Cryptosporidium.
    • Blastogregarinea . Chattonaria, Siedleckia.

• • • • • • Postciliodesmatophora Karyorelictea Kentrophoridae . Kentrophoros.
            • Loxodida Cryptopharyngidae . Cryptopharynx.
      • Loxodidae . Loxodes.
    • Geleiidae . Geleia.
      • • Heterotrichea Blepharismidae . Blepharisma
    • Climacostomidae . Climacostomum.
    • Condylostomatidae . Chattonidium, Condylostoma.
    • Fabreidae . Fabrea.
    • Gruberiidae . Gruberia.
      • • • • Coliphorina Folliculinidae . Folliculina.
      • Maristentoridae . Maristentor.
    • Peritromidae . Peritromus.
    • Spirostomidae . Anigsteinia, Spirostomum.
    • Stentoridae . Stentor.
• Intramacronucleata . Incertae sedis: Protocruziidae [Protocruziidia {{au|de Puytorac et al. 1987}}] (Protocruzia).
  • SAL . Incertae sedis: Cariacotrichea (Cariacothrix caudata), Mesodiniidae (Mesodinium), Phacodiniidia (Phacodinium).
    • • • • • • • • • • • • • • • • Spirotrichea Euplotia Euplotida Aspidiscidae . Aspidisca.
          • Certesiidae . Certesia.
          • Euplotidae . Euplotes.
          • Gastrocirrhidae . Gastrocirrhus.
          • Uronychidae . Diophrys, Uronychia.
        • Discocephalida
          • Discocephalidae . Discocephalus, Prodiscocephalus, Paradiscocephalus.
          • Pseudoamphisiellidae . Leptoamphisiella, Pseudoamphisiella.
            • • • • • • • • • Perilemmaphora Hypotrichia Stichotrichida (P)
            • Amphisiellidae . Amphisiella, Bistichella.
            • Atractosidae . Atractos.
            • Epiclintidae . Epiclintes.
            • Gonostomatidae . Cotterillia, Gonostomum.
            • Halteriidae . Halteria, Meseres.
            • Holostichidae . Holosticha, Uncinata.
            • Kahliellidae . Deviata, Kahliella.
            • Keronidae . Kerona.
            • Oxytrichidae (P). Cyrtohymena, Gastrostyla, Oxytricha, Stylonychia.
            • Parabirojimidae . Parabirojimia, Tunicothrix.
            • Plagiotomidae . Plagiotoma.
            • Psammomitridae . Psammomitra.
            • Pseudoamphisiellidae . Pseudoamphisiella.
            • Psilotrichidae . Psilotricha, Urospinula.
            • Schmidingerotrichidae . Schmidingerothrix.
            • Spirofilidae . Spirofilopsis, Strongylidium.
            • Trachelostylidae . Trachelostyla.
            • Uroleptidae . Paruroleptus, Uroleptus.
          • Urostylida (P)
            • Bergeriellidae . Bergeriella, Neourostylopsis.
            • Hemicycliostylidae . Australothrix, Hemicycliostyla.
            • Pseudokeronopsidae . Apoholosticha, Pseudokeronopsis.
            • Pseudourostylidae . Pseudourostyla.
            • Urostylidae . Bakuella, Diaxonella, Urostyla.
              • • • • • • • • • • • Oligotrichea Oligotrichida Cyrtostrombidiidae . Cyrtostrombidium.
            • Pelagostrombidiidae . Pelagostrombidium.
            • Strombidiidae . Strombidium (P).
            • Tontoniidae . Laboea, Tontonia.
          • Choreotrichida . Incertae sedis: Lynnella [Lynnellidae {{au|Liu et al. 2011}}; Lynnellida {{au|Liu et al. 2015}}]
            • Strobilidiina (P)
              • Leegaardiellidae . Leegaardiella.
              • Lohmanniellidae . Lohmanniella.
              • Strobilidiidae . Strobilidium.
              • Strombidinopsidae . Strombidinopsis (P).
            • Tintinnina . Incertae sedis: Helicostomella, Tintinnopsis (P), several other genera.
              • Ascampbelliellidae . Ascampbelliella
              • Cyttarocylididae [probably synonymous with Petalotrichidae]. Cyttarocylis.
              • Dictyocystidae . Dictyocysta.
              • Epiplocylididae . Epiplocylis.
              • Eutintinnidae . Dartintinnus, Eutintinnus.
              • Favellidae . Favella.
              • Nolaclusiliidae . Nolaclusilis.
              • Petalotrichidae [probably synonymous with Cyttarocylididae]. Petalotricha.
              • Ptychocylididae . Cymatocylis, Ptychocylis.
              • Rhabdonellidae . Metacylis, Rhabdonella, Schmidingerella.
              • Stenosemellidae (P). Stenosemella.
              • Tintinnidae . Amphorellopsis, Salpingacantha, Salpingella, Tintinnus.
              • Tintinnidiidae . Tintinnidium.
              • Undellidae . Undella.
              • Xystonellidae . Dadayiella, Parafavella, Xystonella.
      • Licnophoridae . Licnophora, Prolicnophora.
      • Kiitrichidae . Caryotricha, Kiitricha.
        • • • Lamellicorticata Armophorea . Incertae sedis: Mylestomatidae (Mylestoma).
        • Metopida (P)
          • Metopidae (P). Bothrostoma, Brachonella, Eometopus, Metopus, Parametopidium, Tesnospira.
          • Apometopidae . Cirranter, Urostomides.
          • Tropidoatractidae . Palmarella, Tropidoatractus.
            • • • • • Clevelandellida Clevelandellidae . Clevelandella.
          • Inferostomatidae . Inferostoma.
          • Neonyctotheridae . Neonyctotherus.
          • Nyctotheridae (P). Nyctotherus.
          • Sicuophoridae . Sicuophora.
        • Caenomorphidae . Caenomorpha, Ludio, Sulfonecta.
          • • • • • • Odontostomatida Discomorphellidae . Discomorphella.
          • Epalxellidae . Epalxella, Saprodinium.
            • • • • • • • • • • • • • • • • Litostomatea Rhynchostomatia Dileptida Dileptidae . Apodileptus, Dileptus, Pseudomonilicaryon.
            • Dimacrocaryonidae . Dimacrocaryon, Monomacrocaryon, Rimaleptus.
            • Tracheliidae . Trachelius.
        • Haptoria (P). Incertae sedis: Chaenea.
          • Lacrymariidae . Lacrymaria.
            • • • • • • • Haptorida Enchelyodonidae . Enchelyodon, Fuscheria.
            • Homalozoonidae . Homalozoon.
            • Pleuroplitidae . Pleuroplites.
          • Didiniidae . Didinium, Monodinium.
            • • • • • • • Pleurostomatida Amphileptidae . Amphileptus.
            • Litonotidae . Litonotus.
            • Kentrophyllidae . Epiphyllum, Kentrophyllum.
              • • • • • • Spathidiida Acropisthiidae . Acropisthium, Chaenea.
            • Actinobolinidae . Actinobolina.
            • Apertospathulidae . Apertospathula.
            • Enchelyidae . Enchelys.
            • Pseudoholophryidae . Pseudoholophrya.
            • Spathidiidae . Legendrea, Spathidium.
            • Trachelophyllidae . Trachelophyllum.
              • • • • • • • • • • • • • • • • • Helicoprorodontidae Trichostomatia Vestibuliferida Balantidiidae . Balantidium, Neobalantidium (P).
            • Buetschliidae . Buetschlia.
            • Paraisotrichidae . Paraisotrichia.
            • Protocaviellidae . Protocaviella.
            • Protohalliidae . Protohallia.
            • Pycnotrichidae . Pycnothrix, perhaps Buxtonella.
        • Isoendo
          • Isotrichidae . Dasytricha, Isotricha.
            • • • • • • • • • • • • • • • Entodiniomorphida Blepharocorythina Blepharocorythidae . Blepharocorys.
              • Parentodiniidae . Parentodinium.
              • Pseudoentodiniidae . Pseudoentodinium.
                • • • • • • • Entodiniomorphina Cycloposthiidae . Cycloposthium.
              • Gilchristinidae [Gilchristidae {{au|Ito et al. 2006}}]. Digilchristia, Gilchristina.^[39]
              • Ophryoscolecidae . Entodinium, Ophryoscolex, Polyplastron.
              • Polydiniellidae . Polydiniella.
              • Rhinozetidae . Rhinozeta.
              • Spirodiniidae . Spirodinium.
              • Telamodiniidae . Telamodinium.
              • Troglodytellidae . Troglodytella,.
                • • • • • Macropodiniida Amylovoracidae . Amylovorax.
            • Macropodiniidae . Macropodinium.
            • Polycostidae . Polycosta.
  • CONTHREEP [Ventrata {{au|Cavalier-Smith 2004}}]. Incertae sedis: Askenasia, Cyclotrichiidae (Cyclotrichium), Paraspathidium, Pseudotrachelocercidae (Pseudotrachelocerca), Discotrichidae [Discotrichida {{au|Fan et al. 2014}}] (Discotricha, Lopezoterenia).
    • • • • • • • • • • Phyllopharyngea Synhymeniida Nassulopsidae . Nassulopsis.
        • Orthodonellidae . Orthodonella, Zosterodasys.
        • Scaphidiodontidae . Chilodontopsis, Scaphidiodon.
        • Synhymeniidae . Synhymenia.
          • • • • • • • • • • Subkinetalia Cyrtophoria Chlamydodontida (P)
            • Chilodonellidae . Chilodonella.
            • Chitonellidae . Chitonella.
            • Chlamydodontidae . Chlamydodon.
            • Gastronautidae . Gastronauta.
            • Kryoprorodontidae . Gymnozoum.
            • Lynchellidae . Chlamydonella, Lynchella.
              • • • • • • Dysteriida Dysteriidae . Dysteria (P), Trochilia.
            • Hartmannulidae (P). Hartmannula.
            • Kyaroikeidae . Kyaroikeus.
            • Plesiotrichopidae . Plesiotrichopus.
              • • • • • • • • • • • • • • • • • Chonotrichia Exogemmida Chilodochonidae . Chilodochona.
                • Filichonidae . Filichona.
                • Helichonidae . Heliochona.
                • Lobochonidae . Lobochona.
                • Phyllochonidae . Phyllochona.
                • Spirochonidae . Spirochona.
                  • • • • • • • • Cryptogemmida Actinichonidae . Actinichona.
                • Echinichonidae . Echinichona.
                • Inversochonidae . Inversochona.
                • Isochonidae . Isochona.
                • Isochonopsidae . Isochonopsis.
                • Stylochonidae . Stylochona.
                  • • Rhynchodia Hypocomidae . Hypocoma.
                      • • Rhynchodida Ancistrocomidae . Ancistrocoma.
            • Sphenophryidae . Sphenophrya.
              • • • • • • • • • • • Suctoria Exogenida Allantosomatidae . Allantosoma.
            • Dentacinetidae . Dentacineta.
            • Dendrosomididae . Dendrosomides.
            • Ephelotidae . Ephelota.
            • Lecanophryidae . Lecanophrya.
            • Manuelophryidae . Manuelophrya.
            • Metacinetidae . Metacineta.
            • Ophryodendridae . Ophryodendron.
            • Paracinetidae . Paracineta.
            • Phalacrocleptidae . Phalacrocleptes.
            • Podophryidae . Podophrya.
            • Praethecacinetidae . Praethecacineta.
            • Rhabdophryidae . Rhabdophrya.
            • Severonidae . Severonis.
            • Spelaeophryidae . Spelaeophrya.
            • Tachyblastonidae . Tachyblaston.
            • Thecacinetidae . Thecacineta.
              • • • • • • Endogenida Acinetidae . Acineta.
            • Acinetopsidae . Acinetopsis.
            • Choanophryidae . Choanophrya.
            • Corynophryidae . Corynophrya.
            • Dactylostomatidae . Dactylostoma.
            • Dendrosomatidae . Dendrosoma.
            • Endosphaeridae . Endosphaera.
            • Erastophryidae . Erastophrya.
            • Pseudogemmidae . Pseudogemma.
            • Rhynchetidae . Rhyncheta.
            • Solenophryidae . Solenophrya.
            • Tokophryidae . Tokophrya.
            • Trichophryidae . Trichophrya.
              • • • • • • Evaginogenida Cometodendridae . Cometodendron.
            • Cyathodiniidae . Cyathodinium.
            • Dendrocometidae . Dendrocometes.
            • Discophryidae . Discophrya.
            • Enchelyomorphidae . Enchelyomorpha.
            • Heliophryidae . Heliophrya.
            • Periacinetidae . Periacineta.
            • Prodiscophryidae . Prodiscophrya.
            • Rhynchophryidae . Rhynchophrya.
            • Stylocometidae . Stylocometes.
            • Trypanococcidae . Trypanococcus.
              • • • • • Colpodea Bursariomorphida Bryometopidae . Bryometopus (P), Thylakidium.
        • Bursaridiidae . Bursaridium, Paracondylostoma.
        • Bursariidae . Bursaria.
      • Colpodida . Incertae sedis: Bardeliellidae (Bardeliella), Hausmanniellidae (Avestina, Hausmanniella), Ilsiellidae (Ilsiella), Pseudochlamydonellidae (Hackenbergia, Pseudochlamydonella) and Marynidae (Maryna).
        • • • • • • • Bryophryina Bryophryidae . Bryophrya.
          • Sandmanniellidae . Sandmanniella.
            • • • • • Colpodina Colpodidae (P). Colpoda.
          • Grandoriidae . Grandoria.
          • Tillinidae . Tillina.
        • Grossglockneriidae [Grossglockneriina {{au|Foissner 1980}}]. Grossglockneria, Pseudoplatyophrya.
          • • • • Cyrtolophosidida Cyrtolophosididae . Cyrtolophosis.
        • Kreyellidae . Kreyella.
          • • • • Platyophryida Ottowphryidae . Ottowphrya, Platyophryides.
        • Platyophryidae (P). Platyophrya.
        • Sagittariidae . Sagittaria.
        • Sorogenidae . Sorogena.
        • Woodruffiidae . Etoschophrya, Rostrophrya, Woodruffia.
    • Nassophorea (P)
      • Colpodidiidae . Colpodidium.
        • • • • • Nassulida Furgasoniidae . Furgasonia, Wolfkosia.
        • Nassulidae . Nassula, Obertrumia.
          • • • • Microthoracida Microthoracidae . Drepanomonas, Microthorax.
        • Leptopharyngidae . Leptopharynx, Pseudomicrothorax.
    • Prostomatea (P)
      • Apsiktratidae [Prostomatida {{au|Schewiakoff 1896}}]
        • Balanionidae . Balanion.
        • Cryptocaryonidae . Cryptocaryon.
        • Colepidae . Coleps, Plagiopogon.
        • Holophryidae . Holophrya.
        • Lagynidae . Lagynus.
        • Metacystidae . Metacystis, Vasicola.
        • Placidae . Placus.
        • Plagiocampidae . Plagiocampa.
        • Prorodontidae . Prorodon.
        • Urotrichidae . Urotricha.
          • • • • • • • Plagiopylea Plagiopylida Epalxellidae . Epalxella, Saprodinium.
        • Plagiopylidae . Plagiopyla.
        • Sonderiidae . Sonderia.
        • Trimyemidae . Trimyema.
          • • • • • • • • • • • • • Oligohymenophorea Apostomatia Apostomatida Colliniidae . Collinia, Metacollinia.
          • Cyrtocaryidae . Cyrtocaryum.
          • Foettingeriidae . Foettingeria.
          • Pseudocolliniidae . Fusiforma, Pseudocollinia.
            • • • • • Astomatophorida Opalinopsidae . Opalinopsis.
                    • Pilisuctorida Conidophryidae . Conidophrys.
                • Astomatia Anoplophryidae . Anoplophrya.
        • Buetschliellidae . Buetschliella.
        • Clausilocolidae . Clausilocola.
        • Contophryidae . Contophyra.
        • Haptophryidae . Haptophrya.
        • Hoplitophryidae . Hoplitophrya.
        • Intoshellinidae . Intoshellina.
        • Maupasellidae . Maupasella.
        • Radiophryidae . Radiophrya.
          • • • • Hymenostomatia Tetrahymenida . Incertae sedis: Trichospiridae (Trichospira).
          • Curimostomatidae . Curimostoma.
          • Glaucomidae . Glaucoma.
          • Spirozonidae . Spirozona.
          • Tetrahymenidae . Tetrahymena.
          • Turaniellidae . Colpidium, Dexiostoma, Turaniella.
            • • • • • Ophryoglenida Ichthyophthiriidae . Ichthyophthirius.
          • Ophryoglenidae . Ophryoglena.
      • Peniculia (P)
        • • • • • • • Peniculida Clathrostomatidae . Clathrostoma.
          • Frontoniidae . Disematostoma, Frontonia (P).
          • Lembadionidae . Lembadion.
          • Maritujidae . Marituja.
          • Neobursaridiidae . Neobursaridium.
          • Parameciidae . Paramecium.
          • Paranassulidae . Paranassula.
          • Stokesiidae . Stokesia.
        • Urocentridae [Urocentrida {{au|de Puytorac, Grain & Mignot 1987}}]
          • • • • • • • • • • Peritrichia Sessilida Astylozoidae . Astylozoon, Hastatella.
          • Ellobiophryidae . Ellobiophrya.
          • Epistylididae . Epistylis.
          • Lagenophryidae . Lagenophrys.
          • Operculariidae . Opercularia.
          • Rovinjellidae . Rovinjella.
          • Scyphidiidae (P). Scyphidia.
          • Termitophryidae . Termitophrya.
          • Usconophryidae . Usconophrys.
          • Vaginicolidae . Cothurnia, Pyxicola, Thuricola, Vaginicola.
          • Vorticellidae . Carchesium, Epicarchesium (P), Ophrydium, Pelagovorticella, Pseudovorticella (P), Vorticella (P).
          • Zoothamniidae . Haplocaulus, Zoothamnium.
            • • • • • Mobilida Polycyclidae . Polycycla.
          • Trichodinidae . Trichodina.
          • Trichodinopsidae . Trichodinopsis.
          • Urceolariidae . Leiotrocha, Urceolaria.
      • Scuticociliatia (P)
        • • • • • • • Philasterida Cohnilembidae . Cohnilembus.
          • Cryptochilidae . Cryptochilum.
          • Entodiscidae . Entodiscus.
          • Entorhipidiidae . Entorhipidium.
          • Orchitophryidae (P). Orchitophrya.
          • Paralembidae . Anophrys, Paralembus.
          • Parauronematidae (P). Parauronema (P).
          • Philasteridae . Kahlilembus, Philaster.
          • Pseudocohnilembidae . Pseudocohnilembus.
          • Schizocaryidae . Schizocaryum.
          • Thigmophryidae . Thigmophrya.
          • Thyrophylacidae . Thyrophylax.
          • Uronematidae . Uronema.
          • Urozonidae . Urozona.
            • • • • • Pleuronematida Calyptotrichidae . Calyptotricha.
          • Conchophthiridae . Conchophthirus.
          • Ctedoctematidae . Ctedoctema.
          • Cyclidiidae (P). Cristigera, Cyclidium.
          • Dragescoidae . Dragescoa.
          • Eurystomatellidae . Eurystomatella.
          • Histiobalantiidae . Histiobalantium.
          • Peniculistomatidae . Peniculistoma.
          • Pleuronematidae (P). Pleuronema.
          • Thigmocomidae . Thigmocoma.
            • • • • • Thigmotrichida Ancistridae . Ancistrum.
          • Hemispeiridae . Hemispeira.
          • Hysterocinetidae . Hysterocineta.
          • Paraptychostomidae . Paraptychostomum.
        • Loxocephalida (P)
          • Cinetochilidae (P). Cinetochilum, Sathrophilus.
          • Loxocephalidae . Cardiostomatella, Dexiotricha, Loxocephalus.

Rhizaria incertae sedis: Gymnosphaerida . Actinocoryne, Cienkowskya, Gymnosphaera, Hedraiophrys [possible synonym of ''Cienkowskya''], Wagnerella.

• Cercozoa incertae sedis:
  • Aquavolonida . Aquavolon, Lapot.
  • Tremulida . Tremula.
  • Genera of uncertain placement: Dictiomyxa, Katabia, Myxodictyium, Pontomyxa, Protomyxa, Protogenes, Pseudospora, Rhizoplasma
  • Discocelia [''[[Discocelis]] ]
  • Psammonobiotidae* . Alepiella, Chardezia, Edaphonobiotus, Feuerbornia, Frenzelina, Lesquerella, Micramphora, Micropsammella, Nadinella, Ogdeniella, Psammonobiotus, Propsammonobiotus, Rhumbleriella.
• Sarcomonadea (P)
  • Cercomonadida [Cercomonadidae {{au|Kent 1880, emend. Mylnikov and Karpov 2004}}; Cercobodonidae {{au|Hollande 1942}}]. Cercomonas, Eoercomonas, Filomonas, Neocercomonas, Cavernomonas.
  • Paracercomonadida [Paracercomonadidae {{au|Cavalier-Smith & Karpov 2012}}]. Brevimastigomonas, Metabolomonas, Nucleocercomonas, Paracercomonas, Phytocercomonas.
  • Glissomonadida [Heteromitidae {{au|Kent 1880, emend. Mylnikov 1990, emend. Mylnikov & Karpov 2004}}]
    • Saccharomycomorphidae . Saccharomycomorpha.
    • Sandonidae . Sandona, Flectomonas, Neoheteromita, Mollimonas.
    • Dujardinidae . Dujardina.
    • Bodomorphidae . Bodomorpha.
    • Proleptomonadidae . Proleptomonas.
    • Allapsidae . Allapsa, Teretomonas, Allantion.
    • Viridiraptoridae . Orciraptor, Viridiraptor.
    • Pansomonadidae . Agitata, Aurigamonas.
• Sainouroidea [Helkesida {{au|Cavalier-Smith 2018}}]
  • Sainouridae . Acantholus, Cholamonas, Homocognata, Sainouron.
  • Helkesimastigidae . Helkesimastix.
  • Guttulinopsidae . Guttulinopsis, Olivorum, Puppisaman, Rosculus.
• Thecofilosea . Incertae sedis: Mataza.
  • Phaeodarea [Tripylea {{au|Hertwig 1879}}]
    • Phaeoconchia . Coelodendrum, Coelographis, Conchellium, Conchopsis.
    • Phaeocystina . Aulacantha, Aulographis, Cannoraphis.
    • Phaeogromia . Castanella, Challengeron, Haeckeliana, Medusetta, Tuscarora.
    • Phaeosphaeria . Aulosphaera, Cannosphaera, Sagosphaera.
      • • Cryomonadida Rhogostomidae . Rhogostoma, Sacciforma, Capsellina.
    • Protaspidae [Cryomonadidae {{au|Cavalier-Smith 1993}}]. Cryothecomonas, Protaspa.
      • • Ventricleftida Ventrifissuridae . Ventrifissura.
    • Verrucomonadidae . Verrucomonas.
      • • Tectofilosida Chlamydophryidae . Chlamydophryse, Diaphoropodon, Lecythium, Trachyrhizium.
    • Psammonobiotidae . Micropsamella.
    • ?Volutellidae . Pseudovolutella, Volutella.
      • • • • Fiscullina Fiscullidae . Fisculla, Omnivora.
      • Pseudodifflugiidae . Pseudodifflugia.
      • Rhizaspididae . Rhizaspis.
  • Ebriacea [Ebriidae {{au|Poche 1913}}; Ebriida {{au|Deflandre 1936}}]. Ebria, Hermesinum, Botuliforma.
    • Imbricatea Spongomonadida [Spongomonadidae {{au|Karpov 1990}}]. Rhipidodendron, Spongomonas.
      • • Marimonadida Abolliferidae . Abollifer, Cowlomonas, ?Heterochromonas.
    • Auranticordidae . Auranticordis, Rhabdamoeba.
    • Cyranomonadidae . Cyranomonas.
    • Pseudopirsoniidae . Pseudopirsonia.
      • • Variglissida Clautriaviidae . Clautriavia.
    • Nudifilidae . Nudifila.
    • Quadriciliidae . Quadricilia.
      • • Silicofilosea Thaumatomonadida [Thaumatomastigidae {{au|Patterson and Zoelfell 1991}}]
      • Thaumatomonadidae . Allas, Hyaloselene, Reckertia, Thaumatomonas, Thaumatomastix, Ovaloplaca, Scutellomonas, Thaumatospina, Penardeugenia.
      • Peregriniidae . Gyromitus, Peregrinia.
      • Esquamulidae . Esquamula.
    • Euglyphida . Incertae sedis: Phaeobola.
      • Cyphoderiidae . Campascus*, Corythionella, Cyphoderia [''[[Schaudinnula]]], Messemvriella*, Pseudocorythion, Ichthyosquama, Knarr, Oleiformis, Psammoderia.^[40]
      • Paulinellidae . Micropyxidiella, Ovulinata, Paulinella.
        • • • • • Euglyphina Assulinidae . Assulina, Placocista, Valkanovia*.
        • Sphenoderiidae . Sphenoderia, Trachelocorythion, Deharvengia*.
        • Trinematidae . Corythion, Playfairina*, Puytoracia*, Trinema.
        • Euglyphidae . Euglypha, Scutiglypha.
        • Tracheleuglypha
    • Trivalvulariida . Leptogromia, Trivalvularis.
• Metromonadea . Metromonas, Metopion, Micrometopion, Kiitoksia.
• Granofilosea . Incertae sedis granofilosean genera*: ?Apogromia, ?Kibisidytes, ?Leucodictyon, ?Limnofila, ?Mesofila, ?Microcometes, ?Microgromia, ?Nanofila, ?Reticulamoeba and probably ?Belaria, ?Ditrema, ?Heliomorpha [=''Dimorpha''] and ?Paralieberkuehnia.
  • Massisteridae . Massisteria, Minimassisteria.
  • Clathrulinidae [Desmothoracida {{au|Hertwig and Lesser 1874}}]. Actinosphaeridium, Cienkowskya*, Clathrulina, Hedriocystis, Penardiophrys, ?Servetia.
• Chlorarachnea . Amorphochlora, Bigelowiella, Chlorarachnion, Cryptochlora, Gymnochlora, Lotharella, Minorisa, Partenskyella, Viridiuvalis.

• Vampyrellida [Aconchulinida {{au|De Saedeleer 1934}}]. Incertae sedis: Arachnula, Gobiella, Lateromyxa, Penardia.
  • Thalassomyxa
  • Vampyrellidae . Vampyrella.
  • Leptophryidae . Arachnomyxa, Leptophrys, Planctomyxa, Platyreta, Pseudovampyrella,^[41] Theratromyxa, Vernalophrys.
  • Placopodidae [Hyalodiscidae {{au|Poche 1913}}]. Placopus.
  • Sericomyxidae . Sericomyxa.
    • Phytomyxea Marinomyxa
  • Plasmodiophorida [Plasmodiophorales {{au|Engl. 1892}};<ref name=Engler1903/> Plasmodiophoromycota {{au|R.H. Whittaker 1969}}<ref name=whitaker5kingdoms/>]. Plasmodiophora [''Ostenfeldiella''], Polymyxa, Woronina, Ligniera [''Anisomyxa''; ''Rhizomyxa''; ''Sorolpidium''], Sorosphaerula [''Tuburcinia''; ''Sorosporium''], Spongospora [''Clathrosorus''], ?Membranosorus, ?Octomyxa, ?Polymyxa, ?Sorodiscus, ?Tetramyxa [''Molliardia''; ''Thecaphora''].
  • Phagomyxida . Phagomyxa, Maullinia.
• Filoreta
• Gromia
  • • Ascetosporea Haplosporida . Bonamia, Haplosporidium, Minchinia, Urosporidium.
  • Mikrocytida . Mikrocytos, Paramikrocytos.
  • Paramyxida . Marteilia, Paramyxa, Paramarteilia, Marteilioides, Eomarteilia.
  • Claustrosporidium
  • Paradiniida . Paradinium.

• Foraminifera . Incertae sedis groups: ?Lagenida, ?Heterogromia, ?Komokiacea*.
  • Monothalamids (P) [currently under revision]. All genera traditionally in Allogromiida, Astrorhizida, and the Xenophyophorea. Genera unplaced into families: Allogromia, Astrammina, Crithionina, Notodendrodes, Psammophaga, Bathysiphon.
    • Nujappikia
    • Allogromiidae . Vellaria.
    • Lieberkuehniidae . Lieberkuehnia, Claparedellus.
    • Edaphoallogromiidae . Edaphoallogromia.
    • Lacogromiidae . Lacogromia.
    • Limnogromiidae . Limnogromia.
    • Reticulomyxidae . Reticulomyxa, Dracomyxa, Haplomyxa, Wobo.
    • Schizamminidae . Jullienella, Schizammina, Spiculosiphon.
    • Velamentofexidae . Velamentofex.
  • Tubothalamea . Fusulinida probably belongs to this group.
    • Miliolida . Alveolina, Cornuspira, Miliammina, Pyrgo, Quinqueloculina, Sorites.
    • Spirillinida . Patellina, Spirillina.
    • Ammodiscidae . Ammodiscus, Glomospira.
      • • • • • • Globothalamea Rotaliida Planorbulinidae . Planorbulinella, Hyalinea.
                • Discorboidea Discorbidae . Discorbis.
        • Rosalinidae . Rupertina, Discanomalina, "Rosalina", Gavelinopsis, Planorbulina.
      • Rotalioidea . Incertae sedis genera: ?Criboelphidium, ?"Elphidium", ?Protelphidium.
        • Elphidiidae . Elphidium.
        • Ammoniidae . Ammonia.
        • Elphidiellidae . Elphidiella.
        • Haynesinidae . Haynesina, Aubignyna.
          • • • • Glabratelloidea Rotaliellidae . Rotaliella, Rossyatella.
        • Buliminoididae . Buliminoides.
        • Glabratellidae . Glabratella, Glabratellina, Angulodiscorbis, Planoglabratella.
          • • • • Calcarinoidea Calcarinidae . Neorotalia, Baculogypsina, Baculogypsinoides, Schlumbergerella, Pararotalia.
                • Nummulitoidea Nummulitidae . Nummulites, Operculinella, Cycloclypeus, Heterostegina, Operculina, Planoperculina, Planostegina.
                • Serioidea Uvigerinidae . Uvigerina, Rectuvigerina, Trifarina.
        • Bolivinitidae . Bolivina, Brizalina, Saidovina.
        • Cassidulinidae . Globocassidulina, Cassidulinoides, Evolvocassidulina, Islandiella, Ehrenbergina
        • Sphaeroidinidae . Sphaeroidina.
        • Globobuliminidae . Globobulimina.
      • Incertae sedis Rotaliida families:
        • ?Nonionidae . Nonion, Nonionella, Nonionellina, Nonionoides.
        • ?Virgulinellidae . Virgulinella.
        • ?Buliminidae . Bulimina.
        • ?Epistominellidae . Epistominella.
        • ?Stainforthiidae . Stainforthia, Gallitellia.
        • ?Cibicididae . Cibicides, Cibicidoides, Heterolepa.
        • ?Chilostomellidae . Chilostomella.
        • ?Pullenidae . Pullenia.
        • ?Nuttalidae . Nuttalides.
        • ?Discorbinellidae . Discorbinella, Hanzawaia.
        • ?Astrononionidae . Astrononion.
        • ?Oridorsalidae . Oridorsalis.
        • ?Melonidae . Melonis.
        • ?Cymbaloporidae . Cymbaloporella.
        • ?Rubratelliidae . Rubratella.
        • ?Murrayinelliidae . Murrayinella.
    • Globigerinida (P)
      • • • • • • Parvularugoglobigerinoidea Parvularuglobigerinidae . Pseudocaucasina, Palaeoglobigerina, Parvularugoglobigerina.
                • Eoglobigerinoidea Eoglobigerinidae . Alicantina, Eoclavatorella, Eoglobigerina, Parasubbotina, Pseudoglobigerinella, Subbotina, Turbeogloborotalia.
        • Globoquadrinidae . Dentoglobigerina, Globoquadrina.
        • Neoacarininidae . Neoacarinina.
        • Porticulasphaeridae . Globigerinatheka, Guembelitrioides, Inordinatosphaera, Orbulinoides, Porticulasphaera.
          • • • • Globigerinoidea Globigerinidae . Alloglobigerinoides, Ciperoella, Globigerina, Globicuniculus, Globigerinoides, Globigerinoidesella, Globoturborotalita, Trilobigerina [''[[Trilobatus]]], Zeaglobigerina.
        • Globigerinellidae . Beella, Bolliella, Globigerinella, Orcadia, Protentella, Quiltyella.
        • Hastigerinidae . Hastigerina, Hastigerinella, Hastigerinopsis.
        • Orbulinidae . Biorbulina, Candorbulina, Orbulina, Praeorbulina.
        • Sphaeroidinellidae . Prosphaeroidinella, Sphaeroidinella, Sphaeroidinellopsis.
        • Turborotalitidae . Berggrenia, Turborotalita.
          • • • • Globorotalioidea Catapsydracidae . Catapsydrax, Globigerinopsoides, Globigerinoita, Velapertina.
        • Globorotaloididae . Clavatorella, Globorotaloides, Protentelloides.
        • Globorotaliidae . Dentigloborotalia, Globoconella, Globorotalia, Hirsutella, Jenkinsella, Menardella, Neogloboquadrina, Paragloborotalia, Truncorotalia.
        • Pulleniatinidae . Pulleniatina.
          • • • • Globanomalinidoidea Globanomalinidae . Carinoturborotalia, Globanomalina, Luterbacheria, Planoglobanomalina, Turborotalia.
                • Hantkeninoidea Pseudohastigerinidae . Pseudohastigerina.
        • Hantkeninidae . Applinella, Aragonella, Clavigerinella, Cribrohantkenina, Hantkenina.
          • • • • Truncorotaloidinoidea Globigerapsidae . Globigerapsis, Muricoglobigerina.
        • Planorotalitidae . Astrorotalia, Planorotalites.
        • Truncorotaloididae . Acarinina, Igorina, Morozovella, Morozovelloides, Pearsonites, Praemurica, Pseudogloboquadrina, Testacarinata, Truncorotaloides.
          • • • • • • • Globotruncanida Abathomphaloidea Abathomphalidae . Abathomphalus.
        • Globotruncanellidae . Globotruncanella, Spinoglobotruncanella.
          • • • • Favuselloidea Conoglobigerinidae . Conoglobigerina, Tenuigerina, ?Sphaerogerina.
        • Favusellidae . Ascoliella, Favusella, Koutsoukosia.
        • Globuligerinidae . Compactogerina, Globuligerina, Haeuslerina, Petaloglobigerina.
          • • • • Hedbergelloidea Ananiidae . Anania, Badriella, Costellagerina, Hillsella, Liuenella [''[[Liuella]]], Loeblichella, Muricohedbergella, Paracostellagerina, Pessagnoina, Planohedbergella, Pseudoclavihedbergella, Vanhintella.
        • Hedbergellidae . Asterohedbergella, Clavihedbergella, Hedbergella, Microhedbergella, Paraticinella, Pseudoguembelitria.
        • Helvetoglobotruncanidae . Angulocarinella, Bermudeziana, Bollitruncana, Fingeria, Hedbergellita, Brittonella, Helvetoglobotruncana, Unitruncatus, Whiteinella.
        • Praehedbergellidae . Blefuscuiana, Gorbachikella, Praehedbergella, Lilliputianella, Lilliputianelloides, Wondersella.
          • • • • Globotruncanoidea Globotruncanidae . Contusotruncana, Globotruncana, Marginotruncana, Obliquacarinata, Sphaerotruncana, Ventrotruncana.
        • Praeglobotruncanidae . Concavatotruncana, Dicarinella, Falsotruncana, Rotundina, Praeglobotruncana, Verotruncana.
        • Reissidae . Elevatotruncana, Globotruncanita, Kassabiana, Radotruncana, Sigalitruncana, Turbotruncana.
          • • • • Planomalinoidea Eohastigerinellidae . Eohastigerinella, Hastigerinoides.
        • Globigerinelloididae . Alanlordella, Allotheca, Biglobigerinella, Blowiella, Claviblowiella, Globigerinelloides, Pseudoschackoina.
        • Planomalinidae . Bannerina, Planomalina, Pseudoplanomalina.
        • Schackoinidae . Asymetria, Groshenyia, Leupoldina, Neoschackoina, Schackoina.
          • • • • Rotaliporoidea Rotaliporidae . Anaticinella, Pseudothalmanninella, Rotalipora, Thalmanninella.
        • Ticinellidae . Biticinella, Claviticinella, Ticinella.
          • • • • Rugoglobigerinoidea Helvetiellidae . Archaeoglobigerina, Bucherina, Dorbignya, Edgarinella, Gandolfia, Gansserina, Globocarinata, Helvetiella, Kuglerina.
        • Rugoglobigerinidae . Archaeoglobitruncana, Plummerita, Rugoglobigerina, Rugosocarinata, Rugotruncana, Trinitella.
          • • • • • • • Heterohelicida Heterohelicoidea Gublerinidae . Gublerina, Lipsonia, Praegublerina.
        • Heterohelicidae . Braunella, Bronnimannella, Ehrenbergites, Globoheterohelix, Fleisherites, Hartella, Heterohelix, Huberella, Laeviheterohelix, Lazarusina, Lunatriella, Magellanina, Mihaia, Nederbragtina, Planoheterohelix, Protoheterohelix, Pseudoplanoglobulina, Steineckia, Striataella, Texasina, ?Bifarina, ?Rectoguembelina, ?Zeauvigerina.
        • Pseudotextulariidae . Planoglobulina, Pseudotextularia, Racemiguembelina.
        • Pseudoguembelinidae . Eicheriella, Leptobimodalia, Pseudoguembelina.
        • Spiroplectidae . Hendersonites [''[[Hendersonites|Hendersonia]]], Neohendersonites, Paraspiroplecta, Spiroplecta.
        • Ventilabrellidae . Planulitella, Proliferania, Sigalia, Ventilabrella.
          • • • • • • • Guembelitriida Cassigerinelloidea Cassigerinellidae . Cassigerinella, Riveroinella.
                • Guembelitrioidea Guembelitriidae . Cassigerinelloita, Guembelitria, Chiloguembelitria, Jenkinsina, ?Archaeoguembelitria, ?Gallitellia, ?Guembelitriella.
                • Chiloguembelinoidea Chiloguembelinidae . Chiloguembelina, Woodringina, ?Streptochilus.
                • Globoconusoidea Globoconusidae . Globoconusa, Trochoguembelitria,
    • Order ? (unnamed)
      • • • • • • Globigerinitoidea Candeinidae . Candeina.
        • Globigerinatellidae . Globigerinatella.
        • Globigerinitidae . Globigerinita, Mutabella, Polyperibola, Tinophodella.
        • Tenuitellidae . Praetenuitella, Tenuitella, Tenuitellinata, Tenuitellita.
        • Family ? (unnamed). Dipsidripella, ?Antarcticella.
    • Robertinida . Hoeglundina, Robertina, Robertinoides.
    • Textulariida (P). Cyclammina, Eggerella, Reophax, Textularia, Trochammina.
    • Carterinida . Carterina.
      • • • Radiolaria Acantharea Chaunocanthida . Amphiacon, Conacon, Gigartacon, Heteracon, Stauracon.
    • Holocanthida . Acanthochiasma, Acanthocolla, Acanthoplegma.
    • Symphyacanthida . Amphilithium, Astrolonche, Pseudolithium.
    • Arthracanthida . Acanthometra, Daurataspis, Dictyacantha, Diploconus, Phractopelta, Phyllostaurus, Pleuraspis, Stauracantha.
  • Taxopodida . Sticholonche.
    • • • Polycystinea Spumellaria . Actinomma, Didymocyrtis, Euchitonia, Hexacontium, Hexalonche, Hexastylus, Octodendron, Plegmosphaera, Saturnalis, Spongaster, Spongosphaera.
    • Nassellaria . Artostrobus, Eucyrtidium, Lithomelissa, Pterocanium, Pterocorys.
    • Collodaria . Acrosphaera, Collosphaera, Collozoum, Sphaerozoum, Rhaphidozoum, Siphonsphaera, Thalassicolla.
      • • • • Orodaria Oroscenidae [Orosphaerida {{au|Haeckel 1887}}; Orosphaeridae {{au|Haecker 1908}}]. Oroscena, Orostaurus, Oropelex. Nomina dubia genera: Orosphaera, Orodictyum, Orona, Oronium.
      • Thalassothamnidae [Cytocladidae {{au|Schröder, 1908}}]. Thalassothamnus, Cytocladus. Nomen dubium genus: Conostylus.
        • • • Entactinaria Entactiniidae . Afanasievella, Apophysiactinia, Borisella, Callela, Cancellosphaera, Costaentactinia, Cyclocarpus, Duodecimentactinia, Langsonsphaera, Entactinosphaera, Gracilentactinia, Holdisphaera, Involutentactinia, Kashiwara, Magnentactinia, Magnisphaera, Microporosa, Moskovistella, Multientactinia, Munzuwonella, Paratriposphaera, Perforentactinia, Plenoentactinia, Plenosphaera, Pluristratoentactinia, Polyedroentactinia, Provisocyntra, Radiobisphaera, Retentactinia, Retisphaera, Sinosphaera, Spongentactinia, Stigmosphaerostylus, Trilonche, Uberinterna, Wuyia.^[42]
      • Tetrentactiniidae . Multisphaera.
      • Triassothamnidae . Triassothamnus.^[43]

• Haptophyta
  • Pavlovales [Pavlovophyceae {{au|Cavalier-Smith 1986}}]. Diacronema, Exanthemachrysis, Pavlova, Rebecca.
    • • • Prymnesiophyceae Prymnesiales . Chrysochromulina, Chrysocampanula, Dicrateria, Haptolina, Prymnesium, Pseudohaptolina.
    • Phaeocystales . Phaeocystis.
    • Isochrysidales . Emiliania, Gephyrocapsa, Isochrysis, Ruttnera, Tisochrysis.
    • Coccolithales . Balaniger, Calciosolenia, Coccolithus, Hymenomonas, Chrysotila, Wigwamma.
      • • Rappephyceae Pavlomulinales . Pavlomulina.
• Centroplasthelida [Centrohelea {{au|Kühn 1926 sensu Cavalier-Smith in Yabuki et al. 2012}}; Centroheliozoa {{au|Dürrschmidt & Patterson 1987}}]
  • ?Parasphaerastrum.
  • ?Spiculophryidae . Spiculophrys.
    • • • • • • • Pterocystida Raphidista Choanocystidae . Choanocystis.
      • Raphidiophryidae . Raphidiophrys.
        • • • Pterista Oxnerellidae . Oxnerella.
      • Pterocystidae . Pterocystis, Raineriophrys, Chlamydaster, Pseudoraphidiophrys, Pseudoraphidocystis, Triangulopteris,^[44] Khitsovia.^[45]
      • Heterophryidae . Heterophrys, Sphaerastrum.
        • Panacanthocystida Yogsothothidae [Chthonida {{au|Shɨshkin & Zlatogursky 2018}}; Yogsothothina {{au|Shɨshkin & Zlatogursky 2018}}]. Yogsothoth.
          • • Acanthocystida Marophryidae [Marophryina {{au|Cavalier-Smith in Yabuki et al. 2012}}]. Marophrys.
              • • Chalarothoracina Acanthocystidae . Acanthocystis.
        • Raphidocystidae . Raphidocystis.

• Palpitomonas bilix
• Rollomonadia [Cryptophyta {{au|Silva 1962}}; Cryptophyta {{au|Cavalier-Smith 1986}}]
  • ?Bjornbergiella
  • Kathablepharididae [Kathablepharidaceae {{au|Skuja 1939}}; Leucocryptea {{au|Cavalier-Smith 2004}}]. Hatena, Kathablepharis, Leucocryptos, Platychilomonas, Roombia.
    • • • • • • • Cryptomonada Cyathomonadacea Goniomonadidae . Goniomonas [previously ''[[Cyathomonas]]].
      • Hemiarmidae . Hemiarma.
    • Cryptophyceae [Cryptomonadea {{au|Stein 1878 emend. Schoenichen 1925}}]. Incertae sedis taxa: Cyanomonas, Plagioselmis.^[46]
      • • • • • • Cryptomonadales Baffinellaceae . Baffinella.^[47]
        • Cryptomonadaceae . Cryptomonas, Chilomonas.
          • • • • Pyrenomonadales Pyrenomonadaceae . Pyrenomonas [=''[[Rhodomonas]]], Storeatula, Rhinomonas.
        • Geminigeraceae . Geminigera, Teleaulax, Hanusia, Guillardia, Proteomonas.
        • Chroomonadaceae . Chroomonas, Falcomonas, Komma.
        • Hemiselmidaceae . Hemiselmis.
      • ?Tetragonidiales . Tetragonidium.

Excavates

• Malawimonadidae . Gefionella, Malawimonas.
• Imasidae . Imasa.

• Barthelona ^[48]
• Skoliomonas ^[49]
• Anaeramoebae [Anaeramoebidae {{au|Táborský, Pánek & Čepička 2017}}]. Anaeramoeba.^[50]
• Fornicata
  • "Carpediemonas-like organisms" (P). Aduncisulcus, Carpediemonas, Dysnectes, Ergobibamus, Hicanonectes, Kipferlia.
    • • • Diplomonadida Hexamitinae . Enteromonas, Gyromonas*, Hexamita, Spironucleus, Trepomonas, Trigonomonas*, Trimitus.
    • Giardiinae . Brugerolleia*, Giardia, Octomitus.
  • Retortamonadida (P). Chilomastix, Retortamonas.
  • Caviomonadidae . Caviomonas*, Iotanema.
• Parabasalia
  • ?Tricercomitus
  • Trichomonadida . Cochlosoma, Dientamoeba, Lacusteria, Pentatrichomonas, Pentatrichomonoides, Pseudotrichomonas, Pseudotrypanosoma, Tetratrichomonas, Trichomonas, Trichomonoides, Trichomitopsis.
  • Honigbergiellida (P?). Ditrichomonas, Cthulhu, Cthylla, Hexamastix, Honigbergiella, Monotrichomonas.
  • Hypotrichomonadida . Hypotrichomonas, Trichomitus.
  • Tritrichomonadida (P?). Dientamoeba, Histomonas, Monocercomonas, Parahistomonas, Simplicimonas, Tritrichomonas.
  • Cristamonadida . Caduceia, Calonympha, Coronympha, Deltotrichonympha, Devescovina, Foaina, Gigantomonas, Joenia, Joenina, Joenoides, Joenopsis*, Kofoidia, Koruga, Macrotrichomonas, Macrotrichomonoides, Metadevescovina, Mixotricha, Pachyjoenia*, Projoenia*, Pseudodevescovina, Rhizonympha*, Snyderella, Stephanonympha.
  • Spirotrichonymphida . Holomastigotes*, Holomastigotoides, Microjoenia*, Micromastigotes*, Rostronympha*, Spiromastigotes*, Spironympha*, Spirotrichonympha*, Spirotrichonymphella, Uteronympha*.
  • Lophomonadida . Lophomonas.
  • Trichonymphida . Barbulanympha, Eucomonympha, Heliconympha, Hoplonympha, Leptospironympha, Macrospironympha*, Pseudotrichonympha, Rhynchonympha*, Spirotrichosoma*, Staurojoenina, Teranympha, Trichonympha, Urinympha.
• Preaxostyla
  • Oxymonadida . Barroella, Blattamonas, Brachymonas, Dinenympha, Microrhopalodina, Monocercomonoides, Notila, Opisthomitus, Oxymonas, Paranotila, Polymastix, Pyrsonympha, Sauromonas, Saccinobaculus, Streblomastix, Tubulimonoides.
  • Trimastigidae . Trimastix.
  • Paratrimastigidae . Paratrimastix.

• • • Ophirinina Agogonidae . Agogonia.^[51]
  • Ophirinidae . Ophirina.
    • Andalucina Andaluciidae . Andalucia.
  • Stygiellidae . Stygiella, Velundella.
• Histionina . Histiona, Jakoba, Moramonas, Reclinomonas, Seculamonas nomen nudum.

• Tsukubamonadidae . Tsukubamonas.

• Pharyngomonada . Pharyngomonas
  • • Tetramitia Selenaionidae . Dactylomonas, Selenaion.
  • Neovahlkampfiidae . Neovahlkampfia.
    • • • Eutetramitia Vahlkampfiidae (P). Fumarolamoeba, Heteramoeba, Naegleria, Neovahlkampfia, Paravahlkampfia, Tetramitus, Vahlkampfia, Willaertia.
    • Gruberellidae . Gruberella*, Stachyamoeba.
    • Acrasidae . Acrasis, Allovahlkampfia, Pocheina.
    • Percolomonadidae . Percolomonas.
    • Psalteriomonadidae . Harpagon, Psalteriomonas, Monopylocystis, Pseudoharpagon, Sawyeria.
    • Stephanopogonidae . Stephanopogon.
  • Creneidae . Creneis.
  • Tulamoebidae . Pleurostomum, Tulamoeba.

• Euglenida . Uncertain genera: Moyeria .^[52]
  • Petalomonadida . Atraktomonas*, Biundula*, Calycimonas, Dolium, Dylakosoma*, Notosolenus, Pentamonas*, Petalomonas, Scytomonas, Sphenomonas, Tropidoscyphus*.^[53]
  • Alistosa . Ploeotia, Serpenomonas, Keelungia, Lentomonas, Decastava.^[54]
  • Entosiphon
  • Gaulosia ^[55]
  • Karavia . Hemiolia, Liburna.^[55]
  • Olkaspira .^[54]
    • Chelandium ^[55]
    • Olkasia ^[56]
    • Spirocuta ^[57] [Helicales {{au|Perschke et al. 2017}}]^[54]
      • • • • • • Anisonemia Anisonemidae . Anisonema, Dinema (P), Heteronema.
                  • • Natomonadida Neometanemidae . Neometanema.
          • Aphagea [Rhabdomonadina {{au|Leedale 1967 emend. Cavalier-Smith 1993}}].^[58] Astasia, Distigma, Gyropaigne, Menoidium, Parmidium, Rhabdomonas.^[54]
      • Peranemidae (P). Chasmostoma, Jenningsia [''Peranemopsis''],^[59] Peranema, Teloprocta, Urceolus [''Urceolopsis'', ''Phialonema''].^{[60] [58] [54] [61]}
      • Euglenophyceae [Euglenea {{au|Butschli 1884, emend. Busse & Preisfeld 2002}}]
        • Rapaza
        • Eutreptiales . Eutreptia, Eutreptiella.
          • • • • • • Euglenales Phacaceae . Discoplastis, Lepocinclis, Phacus.
          • Euglenaceae . Ascoglena, Colacium, Cryptoglena, Euglena, Euglenaformis, Euglenamorpha, Euglenaria, Euglenopsis, Hegneria, Klebsina, Monomorphina, Strombomonas, Trachelomonas.
    • Diplonemea Diplonemidae . Diplonema, Rhynchopus, Lacrimia, Sulcionema, Flectonema.
  • Hemistasiidae . Hemistasia.
  • Eupelagonemidae . Eupelagonema.
• Symbiontida . Bihospites, Calkinsia, Postgaardi.
• Kinetoplastea . Incertae sedis genera: ?Bordnamonas, ?Cephalothamnium, ?Rhynchoidomonas.
  • Prokinetoplastina . Ichthyobodo, Perkinsela.
    • • • Metakinetoplastina Neobodonida . Actuariola, Avlakibodo, Azumiobodo, Cruzella, Cryptaulaxella,^[62] Dimastigella, Klosteria, Neobodo, Phanerobia, Rhynchobodo, Rhynchomonas.
    • Parabodonida . Cryptobia, Jarrellia, Parabodo, Procryptobia, Trypanoplasma.
    • Eubodonida . Bodo.
    • Trypanosomatida . Angomonas, Blechomonas, Leptomonas, Paratrypanosoma, Sergeia, Strigomonas, Wallaceina, Phytomonas, Trypanosoma.
      • Leishmaniinae . Borovskyia, Crithidia, Leptomonas, Lotmaria, Novymonas, Porcisia, Zelonia, Endotrypanum, Leishmania.

Orphan groups

• Meteora sporadica

• Spironematellidae [Spironemidae {{au|Doflein 1916 ''nom. inval.''}}]. Hemimastix, Spironematella [''Spironema'' {{au|Klebs 1893 ''nom. inval.''}}], Stereonema .^[63]
• Paramastigidae . Paramastix .^[63]

• Nibbleridia → Nibbleridea → Nibbleridida → Nibbleridae : Nibbleromonas, Ubysseya .
• Nebulidia → Nebulidea → Nebulidida → Nebulidae : Nebulomonas, Ancoracysta .

• Diphyllatea → Diphylleida [Anisomonadea {{au|Cavalier-Smith 1993 emend. 2000}}] → Collodictyonidae [Diphylleidae {{au|Cavalier-Smith 1993}}; Sulcomonadidae {{au|Cavalier-Smith 2013}}]: Collodictyon, Diphylleia [''Aulacomonas'' {{au|Skuja 1939}}], Sulcomonas .
• Hilomonadea → Rigifilida [Micronucleariida {{au|Cavalier-Smith 2008}}]
  • Micronucleariidae : Micronuclearia .
  • Rigifilidae : Rigifila .
• Glissodiscea → Mantamonadida → Mantamonadidae : Mantamonas .

• Ancyromonadidae . Ancyromonas, Nutomonas.
• Planomonadidae . Fabomonas, Planomonas.

Genera of uncertain affiliation

Acinetactis, Actinastrum, Actinocoma, Actinolophus, Adinomonas, Aletium, Amphimonas, Amylophagus, Aphelidiopsis, Asterocaelum, Asthmatos, Aurospora, Barbetia, Berkeleyaesol,^[64] Belaria, Belonocystis, Bertarellia, Bertramia, Bodopsis, Boekelovia, Branchipocola, Camptoptyche, Chalarodora, Cibdelia, Cichkovia, Cinetidomyxa, Cingula, Cladomonas, Clathrella, Codonoeca, Coelosporidium, Copromonas, Cyanomastix, Cyclomonas, Cytamoeba, Dallingeria, Dictyomyxa, Dimastigamoeba, Dinemula, Dinoasteromonas, Diplocalium, Diplomita, Diplophysalis, Diploselmis, Dobellina, Ducelleria, Ectobiella, Elaeorhanis, Embryocola, Endamoeba, Endemosarca, Endobiella, Endomonas, Endospora, Enteromyxa, Eperythrocytozoon, Errera, Fromentella, Gweamonas,^[65] Gymnococcus, Gymnophrydium, Haematotractidium, Hartmannina, Heliobodo, Heliomonas, Hermisenella, Heterogromia, Hillea, Hyalodaktylethra, Immanoplasma, Isoselmis, Janickina, Kamera, Lagenidiopsis, Liegeosia, Luffisphaera, Lymphocytozoon, Lymphosporidium, Macappella, Magosphaera, Malpighiella, Martineziella, Megamoebomyxa, Meringosphaera, Microcometes, Monochrysis, Monodus, Mononema, Myrmicisporidium, Naupliicola, Nephrodinium, Neurosporidium, Orbulinella, Ovicola, Palisporomonas, Pansporella, Paradinemula, Parakaryon, Paraluffisphaera, Paramonas, Paraplasma, Parastasia, Parastasiella, Peliainia, Peltomonas, Petasaria, Phagodinium, Phanerobia, Phloxamoeba, Phyllomitus, Phyllomonas, Physcosporidium, Pleuophrys, Pleuromastix, Protenterospora, Protomonas, Pseudoactiniscus, Pseudosporopsis, Rhizomonas, Rhynchodinium, Rigidomastix, Schewiakoffia, Sergentella, Serpentoplasma, Sphaerasuctans, Spongastericus, Spongocyclia, Stephanomonas, Strobilomonas, Tetradimorpha, Thaulirens, Topsentella, Toshiba, Trichonema, Urbanella.

See also

• Cavalier-Smith's system of classification
• Protist
• Protists in the fossil record

External links

• EukMap – Taxonomy Map of the UniEuk Project

Notes and References

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