Taxonomy of the animals (Hutchins et al., 2003) explained

The taxonomy of the animals presented by Hutchins et al. in 2003^[1] in Grzimek's Animal Life Encyclopedia is a system of classification which covers all the metazoans, from phyla to orders (or families, for Hexapoda and Pisces, or species, for Amphibia, Reptilia, Aves and Mammalia).

Animalia (= Metazoa)

Phylum Porifera

• Phylum Porifera
  • Class Calcarea
    • Order Baeriida
    • Order Clathrinida
    • Order Leucosoleniida
    • Order Lithonida
    • Order Murrayonida
  • Class Hexactinellida
    • Order Amphidiscosida
    • Order Aulocalycoida
    • Order Hexactinosida
    • Order Lychniscosida
    • Order Lyssacinosida
  • Class Demospongiae
    • Order Agelasida
    • Order Astrophorida
    • Order Chondrosida
    • Order Dendroceratida
    • Order Dictyoceratida
    • Order Hadromerida
    • Order Halichondrida
    • Order Halisarcida
    • Order Haplosclerida
    • Order Homosclerophorida
    • Order Poecilosclerida
    • Order Spirophorida
    • Order Verongida
    • Order Verticillitida

Phylum Placozoa

• Phylum Placozoa
  • No order designations

Phylum Monoblastozoa

• Phylum Monoblastozoa
  • No order designations

Phylum Rhombozoa

• Phylum Rhombozoa
  • Order Dicyemida
  • Order Heterocyemida

Phylum Orthonectida

• Phylum Orthonectida
  • Order Orthonectida

Phylum Cnidaria

• Phylum Cnidaria
  • Class Anthozoa
    • Order Actiniaria
    • Order Alcyonacea
    • Order Antipatharia
    • Order Ceriantharia
    • Order Corallimorpharia
    • Order Helioporacea
    • Order Pennatulacea
    • Order Scleractinia
    • Order Zoanthidea
  • Class Hydrozoa
    • Order Actinulida
    • Order Capitata
    • Order Conica
    • Order Cystonectae
    • Order Filifera
    • Order Laingiomedusae
    • Order Limnomedusae
    • Order Moerisiida
    • Order Narcomedusa
    • Order Proboscoida
    • Order Physonectae
    • Order Polypodiozoa
    • Order Trachymedusa
  • Class Cubozoa
    • Order Cubomedusae
  • Class Scyphozoa
    • Order Coronatae
    • Order Rhizostomeae
    • Order Semaeostomeae
    • Order Stauromedusae

Phylum Ctenophora

• Phylum Ctenophora
  • Order Beroida
  • Order Cestida
  • Order Cydippida
  • Order Ganeshida
  • Order Lobata
  • Order Platyctenida
  • Order Thalassocalycida

Phylum Platyhelminthes

• Phylum Platyhelminthes
  • Class Acoela
    • No order designations
  • Class Turbellaria
    • Order Catenulida
    • Order Haplopharyngida
    • Order Lecithoepitheliata
    • Order Macrostomida
    • Order Polycladida
    • Order Prolecithophora
    • Order Proplicastomata
    • Order Proseriata
    • Order Rhabdocoela
    • Order Tricladida
  • Class Trematoda
    • Order Aspidogastrida
    • Order Azygiida
    • Order Echinostomida
    • Order Opisthorchiida
    • Order Plagiorchiida
    • Order Strigeatida
  • Class Monogenea
    • Order Monopisthocotylea
    • Order Polyopisthocotylea
  • Class Cestoda
    • Order Amphilinidea
    • Order Caryophyllidea
    • Order Cyclophyllidea
    • Order Diphyllidea
    • Order Gyrocotylidea
    • Order Haplobothriidea
    • Order Lecanicephalidea
    • Order Litobothriidea
    • Order Nippotaeniidea
    • Order Proteocephalidea
    • Order Pseudophyllidea
    • Order Spathebothriidea
    • Order Tetrabothriidea
    • Order Tetraphyllidea
    • Order Trypanorhyncha

Phylum Nemertea

• Phylum Nemertea
  • Class Anopla
    • Order Heteronemertea
    • Order Palaeonemertea
  • Class Enopla
    • Order Hoplonemertea

Phylum Rotifera

• Phylum Rotifera
  • Order Bdelloida
  • Order Collothecacea
  • Order Flosculariacea
  • Order Ploimida
  • Order Seisonida

Phylum Gastrotricha

• Phylum Gastrotricha
  • Order Chaetonotida
  • Order Macrodasyida

Phylum Kinorhyncha

• Phylum Kinorhyncha
  • Order Cyclorhagida
  • Order Homalorhagida

Phylum Nematoda

• Phylum Nematoda
  • Class Adenophorea
    • Order Araeolaimida
    • Order Chromadorida
    • Order Desmodorida
    • Order Desmoscolecida
    • Order Dorylaimida
    • Order Enoplida
    • Order Isolaimida
    • Order Mermithida
    • Order Monhysterida
    • Order Mononchida
    • Order Muspiceida
    • Order Stichosomida
    • Order Trichocephalida
  • Class Secernentea
    • Order Aphelenchida
    • Order Ascaridida
    • Order Camallanida
    • Order Diplogasterida
    • Order Rhabditida
    • Order Spirurida
    • Order Strongylida
    • Order Tylenchida

Phylum Nematomorpha

• Phylum Nematomorpha
  • Order Gordioidea
  • Order Nectonematoidea

Phylum Acanthocephala

• Phylum Acanthocephala
  • Order Apororhynchida
  • Order Echinorhynchida
  • Order Gigantorhynchida
  • Order Gyracanthocephala
  • Order Moniliformida
  • Order Neoechinorhynchida
  • Order Oligacanthorhynchida
  • Order Polymorphida

Phylum Entoprocta

• Phylum Entoprocta
  • Order Coloniales
  • Order Solitaria

Phylum Micrognathozoa

• Phylum Micrognathozoa
  • Order Limnognathida

Phylum Gnathostomulida

• Phylum Gnathostomulida
  • Order Bursovaginoidea
  • Order Filospermoidea

Phylum Priapulida

• Phylum Priapulida
  • Order Halicryptomorphida
  • Order Priapulimorphida
  • Order Seticoronarida

Phylum Loricifera

• Phylum Loricifera
  • Order Nanaloricida

Phylum Cycliophora

• Phylum Cycliophora
  • Order Symbiida

Phylum Echinodermata

• Phylum Echinodermata
  • Class Crinoidea
    • Order Bourgueticrinida
    • Order Comatulida
    • Order Cyrtocrinida
    • Order Isocrinida
    • Order Millericrinida
  • Class Asteroidea
    • Order Brisingida
    • Order Forcipulatida
    • Order Notomyotida
    • Order Paxillosida
    • Order Spinulosida
    • Order Valvatida
    • Order Velatida
  • Class Concentricycloidea
    • Order Peripodida
  • Class Ophiuroidea
    • Order Euryalida
    • Order Oegophiurida
    • Order Ophiurida
  • Class Echinoidea
    • Order Arbacioida
    • Order Cassiduloida
    • Order Cidaroida
    • Order Clypeasteroida
    • Order Diadematoida
    • Order Echinoida
    • Order Echinothuroida
    • Order Holasteroida
    • Order Holectypoida
    • Order Pedinoida
    • Order Phymosomatoida
    • Order Salenoida
    • Order Spatangoida
    • Order Temnopleurida
  • Class Holothuroidea
    • Order Apodida
    • Order Aspidochirotida
    • Order Dactylochirotida
    • Order Dendrochirotida
    • Order Elasipodida
    • Order Molpadiida

Phylum Chaetognatha

• Phylum Chaetognatha
  • Order Aphragmophora
  • Order Phragmophora

Phylum Hemichordata

• Phylum Hemichordata
  • Order Cephalodiscida
  • Order Rhabdopleurida

Phylum Chordata

• Phylum Chordata
  • Subphylum Urochordata
    • Class Ascidiacea
      • Order Enterogona
      • Order Pleurogona
    • Class Thaliacea
      • Order Doliolida
      • Order Pyrosomatida
      • Order Salpida
    • Class Appendicularia
      • Order Copelata
    • Class Sorberacea
      • Order Aspiraculata
  • Subphylum Cephalochordata
    • Order Amphioxiformes
  • Subphylum Craniata

Superclass Pisces

• Superclass Pisces (polyphyletic)
  • Class Myxini
    • Order Myxiniformes
      • • Class Cephalaspidomorphi Order Petromyzoniformes
  • Class Chondrichthyes
    • Order Chimaeriformes
    • Order Heterodontiformes
    • Order Orectolobiformes
    • Order Carcharhiniformes
    • Order Lamniformes
    • Order Hexanchiformes
    • Order Squaliformes
    • Order Squatiniformes
    • Order Pristiophoriformes
    • Order Rajiformes
  • Class Sarcopterygii
    • Order Coelacanthiformes
    • Order Ceratodontiformes
    • Order Lepidosireniformes
  • Class Actinopterygii
    • Order Polypteriformes
    • Order Acipenseriformes
    • Order Lepisosteiformes
    • Order Amiiformes
    • Order Osteoglossiformes
    • Order Elopiformes
    • Order Albuliformes
    • Order Anguilliformes
    • Order Saccopharyngiformes
    • Order Clupeiformes
    • Order Gonorynchiformes
    • Order Cypriniformes
    • Order Characiformes
    • Order Siluriformes
    • Order Gymnotiformes
    • Order Esociformes
    • Order Osmeriformes
    • Order Salmoniformes
    • Order Stomiiformes
    • Order Aulopiformes
    • Order Myctophiformes
    • Order Lampridiformes
    • Order Polymixiiformes
    • Order Percopsiformes
    • Order Ophidiiformes
    • Order Gadiformes
    • Order Batrachoidiformes
    • Order Lophiiformes
    • Order Mugiliformes
    • Order Atheriniformes
    • Order Beloniformes
    • Order Cyprinodontiformes
    • Order Stephanoberyciformes
    • Order Beryciformes
    • Order Zeiformes
    • Order Gasterosteiformes
    • Order Synbranchiformes
    • Order Scorpaeniformes
    • Order Perciformes
      • Suborder Percoidei
      • Suborder Labroidei
      • Suborder Zoarcoidei
      • Suborder Nototheniodei
      • Suborder Trachinoidei
      • Suborder Blennioidei
      • Suborder Icosteoidei
      • Suborder Gobiesocoidei
      • Suborder Callionymoidei
      • Suborder Gobioidei
      • Suborder Acanthuroidei
      • Suborder Scombroidei
      • Suborder Stromateoidei
      • Suborder Anabantoidei
      • Suborder Channoidei
    • Order Pleuronectiformes
    • Order Tetraodontiformes

Class Amphibia

• Class Amphibia
  • Order Anura
  • Order Caudata
  • Order Gymnophiona

Class Reptilia

• Class Reptilia
  • Order Testudines
  • Order Crocodylia
  • Order Rhynchocephalia
  • Order Squamata

Class Aves

• Class Aves
  • Order Struthioniformes
  • Order Procellariiformes
  • Order Sphenisciformes
  • Order Gaviiformes
  • Order Podicipediformes
  • Order Pelecaniformes
  • Order Ciconiiformes
  • Order Phoenicopteriformes
  • Order Falconiformes
  • Order Anseriformes
  • Order Galliformes
  • Order Opisthocomiformes
  • Order Gruiformes
  • Order Charadriiformes
  • Order Pterocliformes
  • Order Columbiformes
  • Order Psittaciformes
  • Order Musophagiformes
  • Order Cuculiformes
  • Order Strigiformes
  • Order Caprimulgiformes
  • Order Apodiformes
  • Order Coliiformes
  • Order Trogoniformes
  • Order Coraciiformes
  • Order Piciformes
  • Order Passeriformes

Class Mammalia

• Class Mammalia
  • Order Monotremata
  • Order Didelphimorphia
  • Order Paucituberculata
  • Order Microbiotheria
  • Order Dasyuromorphia
  • Order Peramelemorphia
  • Order Notoryctemorphia
  • Order Diprotodontia
  • Order Xenarthra
  • Order Insectivora
  • Order Scandentia
  • Order Dermoptera
  • Order Chiroptera
  • Order Primates
  • Order Carnivora
  • Order Cetacea
  • Order Tubulidentata
  • Order Proboscidea
  • Order Hyracoidea
  • Order Sirenia
  • Order Perissodactyla
  • Order Artiodactyla
  • Order Pholidota
  • Order Rodentia
  • Order Lagomorpha
  • Order Macroscelidea

Phylum Annelida

• Phylum Annelida
  • Class Polychaeta
    • Order Amphinomida
    • Order Capitellida
    • Order Chaetopterida
    • Order Cirratulida
    • Order Cossurida
    • Order Ctenodrilida
    • Order Dinophilida
    • Order Eunicida
    • Order Flabelligerida
    • Order Magelonida
    • Order Nerillida
    • Order Opheliida
    • Order Orbiniida
    • Order Oweniida
    • Order Phyllodocida
    • Order Poeobiida
    • Order Polygordiida
    • Order Protodrilida
    • Order Psammodrilida
    • Order Sabellariida
    • Order Sabellida
    • Order Spintherida
    • Order Spionida
    • Order Sternaspida
    • Order Terebellida
  • Class Myzostomida
    • Order Pharyngidea
    • Order Proboscidea
  • Class Oligochaeta
    • Order Haplotaxida
    • Order Lumbriculida
    • Order Moniligastrida
    • Order Opisthopora
  • Class Hirudinea
    • Order Arhynchobdellae
    • Order Rhynchobdellida
  • Class Pogonophora
    • Order Athecanephria
    • Order Thecanephria

Phylum Vestimentifera

• Phylum Vestimentifera
  • Order Basibranchia
  • Order Riftiidae

Phylum Sipuncula

• Phylum Sipuncula
  • Order Aspidosiphoniformes
  • Order Golfingiaformes
  • Order Phascolosomatiformes
  • Order Sipunculiformes

Phylum Echiura

• Phylum Echiura
  • Order Bonellioinea
  • Order Echiuroinea
  • Order Heteromyota
  • Order Xenopneusta

Phylum Onychophora

• Phylum Onychophora
  • No order designations

Phylum Tardigrada

• Phylum Tardigrada
  • Order Arthrotardigrada
  • Order Echiniscoidea
  • Order Parachela
  • Order Apochela
  • Order Mesotardigrada

Phylum Arthropoda

• Phylum Arthropoda

Subphylum Crustacea

• Subphylum Crustacea
  • Class Remipedia
    • Order Nectiopoda
  • Class Cephalocarida
    • Order Brachypoda
  • Class Branchiopoda
    • Order Anostraca
    • Order Notostraca
    • Order Conchostraca
    • Order Cladocera
  • Class Malacostraca
    • Subclass Phyllocarida
      • Order Leptostraca
    • Subclass Eumalacostraca
      • Order Stomatopoda
      • Order Bathynellacea
      • Order Anaspidacea
      • Order Euphausiacea
      • Order Amphionidacea
      • Order Decapoda
      • Order Mysida
      • Order Lophogastrida
      • Order Cumacea
      • Order Tanaidacea
      • Order Mictacea
      • Order Spelaeogriphacea
      • Order Thermosbaenacea
      • Order Isopoda
      • Order Amphipoda
  • Class Maxillopoda
    • Subclass Thecostraca
      • Order Acrothoracica
      • Order Ascothoracica
      • Order Rhizocephala
      • Order Thoracica
    • Subclass Tantulocarida
      • No order designations
    • Subclass Branchiura
      • Order Arguloida
    • Subclass Mystacocarida
      • No order designations
    • Subclass Copepoda
      • Order Calanoida
      • Order Cyclopoida
      • Order Gelyelloida
      • Order Harpacticoida
      • Order Misophrioida
      • Order Monstrilloida
      • Order Mormonilloida
      • Order Platycopioida
      • Order Siphonostomatoida
    • Subclass Ostracoda
      • Order Myodocopida
      • Order Palaeocopida
      • Order Podocopida
  • Class Pentastomida
    • Order Cephalobaenida
    • Order Porocephalida

Subphylum Cheliceriformes

• Subphylum Cheliceriformes
  • Class Pycnogonida
    • Order Pantopoda
  • Class Chelicerata
    • Subclass Merostomata
      • Order Xiphosura
    • Subclass Arachnida
      • Order Acari
      • Order Amblypygi
      • Order Araneae
      • Order Opiliones
      • Order Palpigradi
      • Order Pseudoscorpiones
      • Order Ricinulei
      • Order Schizomida
      • Order Scorpionida
      • Order Solpugida
      • Order Uropygi

Subphylum Uniramia

• Subphylum Uniramia
  • Class Myriapoda
    • Subclass Chilopoda
      • Order Craterostigmomophora
      • Order Geophilomorpha
      • Order Lithobiomorpha
      • Order Scolopendromorpha
      • Order Scutigeromorpha
    • Subclass Diplopoda
      • Order Callipodida
      • Order Chordeumatida
      • Order Glomerida
      • Order Glomeridesmida
      • Order Julida
      • Order Platydesmida
      • Order Polydesmida
      • Order Polyxenida
      • Order Polyzoniida
      • Order Siphoniulida
      • Order Siphonophorida
      • Order Sphaerotheriida
      • Order Spirobolida
      • Order Spirostreptida
      • Order Stemmiulida
    • Subclass Symphyla
      • Order Symphyla
    • Subclass Pauropoda
      • Order Hexamerocerata
      • Order Tetramerocerata

Subphylum Hexapoda

• Subphylum Hexapoda
  • Class Entognatha
    • Order Protura
    • Order Collembola
    • Order Diplura
  • Class Insecta
    • Order Microcoryphia
    • Order Thysanura
    • Order Ephemeroptera
    • Order Odonata
    • Order Plecoptera
    • Order Blattodea
    • Order Isoptera
    • Order Mantodea
    • Order Grylloblattodea
    • Order Dermaptera
    • Order Orthoptera
    • Order Mantophasmatodea
    • Order Phasmida
    • Order Embioptera
    • Order Zoraptera
    • Order Psocoptera
    • Order Phthiraptera
    • Order Hemiptera
    • Order Thysanoptera
    • Order Megaloptera
    • Order Raphidioptera
    • Order Neuroptera
    • Order Coleoptera
    • Order Strepsiptera
    • Order Siphonaptera
    • Order Diptera
    • Order Trichoptera
    • Order Lepidoptera
    • Order Hymenoptera

Phylum Mollusca

• Phylum Mollusca
  • Class Aplacophora
    • Order Cavibelonia
    • Order Neomeniomorpha
    • Order Pholidoskepia
  • Class Monoplacophora
    • Order Tryblidioidea
  • Class Polyplacophora
    • Order Acanthochitonida
    • Order Ischnochitonida
    • Order Lepidopleurida
  • Class Gastropoda
    • Subclass Opisthobranchia
      • Order Acochlidioidea
      • Order Anaspidea
      • Order Cephalaspidea
      • Order Gymnosomata
      • Order Notaspidea
      • Order Nudibranchia
      • Order Runcinoidea
      • Order Sacoglossa
      • Order Thecosomata
    • Subclass Pulmonata
      • Order Actophila
      • Order Basommatophora
      • Order Stylommatophora
      • Order Systellommatophora
      • Order Patellogastropoda
      • Superorder Vetigastropoda
        • Order Haliotoidea
        • Order Lepetodriloidea
        • Order Vetigastropoda
        • Order Cocculiniformia
        • Order Neritopsina
        • Order Caenogastropoda
  • Class Bivalvia
    • Order Arcoida
    • Order Hippuritoida
    • Order Limoida
    • Order Myoida
    • Order Mytiloida
    • Order Nuculoida
    • Order Ostreoida
    • Order Pholadomyoida
    • Order Pterioida
    • Order Solemyoida
    • Order Trigonioida
    • Order Unionoida
    • Order Veneroida
  • Class Scaphopoda
    • Order Dentaliida
    • Order Gadilida
  • Class Cephalopoda
    • Order Nautilida
    • Order Octopoda
    • Order Sepioidea
    • Order Spirulida
    • Order Teuthoidea
    • Order Vampyromorphida

Phylum Phoronida

• Phylum Phoronida
  • No order designations

Phylum Ectoprocta

• Phylum Ectoprocta
  • Class Phylactolaemata
    • No order designations
  • Class Stenolaemata
    • Order Cyclostomata
  • Class Gymnolaemata
    • Order Cheilostomatida
    • Order Ctenostomata

Phylum Brachiopoda

• Phylum Brachiopoda
  • Class Inarticulata
    • Order Acrotretida
    • Order Lingulida
  • Class Articulata
    • Order Rhynchonellida
    • Order Terebratulida
    • Order Thecideidina

References

1. Hutchins, M. et al. (eds.). Grzimek's Animal Life Encyclopedia, 2nd ed., 17 vols., Farmington Hills, MI: Gale Group, 2003.