2023 in paleomalacology explained

This list of fossil molluscs described in 2023 is a list of new taxa of fossil molluscs that were described during the year 2023, as well as other significant discoveries and events related to molluscan paleontology that occurred in 2023.

Ammonites

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes
Acutimitoceras paracutum^[1]	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Prionoceratidae belonging to the subfamily Acutimitoceratinae.
Acutimitoceras ucatum	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Prionoceratidae belonging to the subfamily Acutimitoceratinae.
Ammonellipsites infirmus^[2]	Sp. nov	Valid	Korn in Zohara Malti et al.	Carboniferous (Tournaisian)	Hassi Sguilma Formation
Arpavoniceras^[3]	Gen. et sp. et comb. nov		Frau & Fuhr	Early Cretaceous (Hauterivian)			A member of the family Neocomitidae. The type species is A. buloti; genus also includes "Shasticrioceras" anglicum Doyle (1963).
Asteroceras dommerguesi^[4]	Sp. nov	Valid	Zaitsev & Ippolitov	Early Jurassic (Sinemurian)		Crimea
Aulatornoceras beyrichi^[5]	Sp. nov	Valid	Söte & Becker	Devonian (Frasnian)	Büdesheim Formation		A member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.
Australopseudothurmannia^[6]	Gen. et sp. nov		Marin, Aguirre-Urreta & Rawson	Early Cretaceous (Hauterivian)			Genus includes new species A. flexuosa.
Becanites rowanensis^[7]	Sp. nov	Valid	Work & Mason	Carboniferous (Tournaisian)	Borden Formation
Bollandoceras antecedens	Sp. nov	Valid	Korn in Zohara Malti et al.	Carboniferous (Tournaisian)	Hassi Sguilma Formation
Buedesheimites	Gen. et sp. nov	Valid	Söte & Becker	Devonian (Frasnian)	Büdesheim Formation		A member of the family Tornoceratidae. Genus includes new species B. housei. Announced in 2022; the final article version was published in 2023.
Corbinites^[8]	Gen. et comb. nov	Valid	Poulton	Late Jurassic			A member of the family Ataxioceratidae belonging to the subfamily Lithacoceratinae. The type species is "Titanites" occidentalis Frebold (1957).
Costiphylloceras limayense^[9]	Sp. nov	Valid	Joly, Parent & Garrido	Middle Jurassic (Aalenian)	Los Molles Formation		A member of the family Phylloceratidae.
Crassotornoceras tenue	Sp. nov	Valid	Söte & Becker	Devonian (Frasnian)	Büdesheim Formation		A member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.
Cryptomorphiceras^[10]	Gen. et comb. et 2 sp. nov	Valid	Marchesi, Balini & Jenks	Late Triassic (Carnian)			A member of Trachyceratinae. The type species is C. compressum (Johnston, 1941); genus also includes new species C. crassum, and C. levicostatum. Announced in 2022; the final article version was published in 2023.
Djanaliparkinsonia egori^[11]	Sp. nov	Valid	Mitta	Middle Jurassic (Bajocian)			A member of the family Stephanoceratidae.
Emileites christophi^[12]	Sp. nov	Valid	Dietze & Hostettler	Middle Jurassic	Passwang Formation
Eocanites delicatus	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Prolecanitidae belonging to the subfamily Prolecanitinae.
Gattendorfia bella	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae.
Gattendorfia corpulenta	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae.
Gattendorfia immodica	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae.
Gattendorfia rhenana	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae.
Gattendorfia schmidti	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae.
Gattendorfia valdevoluta	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae.
Hammatocyclus rugosus	Sp. nov	Valid	Korn in Zohara Malti et al.	Carboniferous (Tournaisian)	Hassi Sguilma Formation
Hasselbachia erronea	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae belonging to the subfamily Gattendorfiinae.
Idahocolumbites phatthalungensis^[13]	Sp. nov.	Valid	Thongterm & Shigeta in Thongterm et al.	Triassic(Spathian)	Chaiburi formation		A member of Ceratitida belonging to the family Columbitidae.
Imitoceras initium	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Prionoceratidae belonging to the subfamily Imitoceratinae.
Kazakhstania kana	Sp. nov	Valid	Korn & Weyer	Carboniferous			A member of the family Gattendorfiidae belonging to the subfamily Gattendorfiinae.
Knemiceras lanceolatum^[14]	Sp. nov		Latil & Jaillard	Early Cretaceous
Knemiceras multicostatum	Sp. nov		Latil & Jaillard	Early Cretaceous
Knemiceras sagetae	Sp. nov		Latil & Jaillard	Early Cretaceous
Knemiceras tunisiense	Sp. nov		Latil & Jaillard	Early Cretaceous
Kornia acia	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Prionoceratidae belonging to the subfamily Prionoceratinae.
Kornia fibula	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Prionoceratidae belonging to the subfamily Prionoceratinae.
Lazariniceras heterostylia^[15]	Sp. nov		Bert et al.	Early Cretaceous (Barremian)
Lazariniceras lhaumeti	Sp. nov		Bert et al.	Early Cretaceous (Barremian)
Linguatornoceras acutilobatum	Sp. nov	Valid	Söte & Becker	Devonian (Frasnian)	Büdesheim Formation		A member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.
Linguatornoceras sandense	Sp. nov	Valid	Söte & Becker	Devonian (Frasnian)	Büdesheim Formation		A member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.
Lobosphinctes dzhissaensis^[16]	Sp. nov	Valid	Mitta in Mitta & Sherstyukov	Middle Jurassic			A member of the family Perisphinctidae.
Merocanites parvevolutus	Sp. nov	Valid	Korn in Zohara Malti et al.	Carboniferous (Tournaisian)	Hassi Sguilma Formation
Metengonoceras foleyi^[17]	Sp. nov	Valid	May & Lucas	Late Cretaceous (Cenomanian)	Dakota Sandstone		A member of the family Engonoceratidae.
Mimimitoceras mina	Sp. nov	Valid	Korn & Weyer	Carboniferous			A member of the family Prionoceratidae belonging to the subfamily Prionoceratinae.
Mimimitoceras perditum	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Prionoceratidae belonging to the subfamily Prionoceratinae.
Mosirites^[18]	Gen. et 2 sp. nov		Shigeta, Nishimura & Izukura	Cretaceous (Albian to Cenomanian)			A heteromorph ammonoid, possibly derived from Anisoceras. Genus includes M. serpentiformis and M. mirabilis.
Muensteroceras rectilineum	Sp. nov	Valid	Korn in Zohara Malti et al.	Carboniferous (Tournaisian)	Hassi Sguilma Formation
Muensteroceras triplettense	Sp. nov	Valid	Work & Mason	Carboniferous (Tournaisian)	Borden Formation
Nomismocanites	Gen. et sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Prolecanitidae belonging to the subfamily Prolecanitinae. The type species is N. raritas.
Paprothites beckeri	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae belonging to the subfamily Pseudarietitinae.
Paprothites kullmanni	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae belonging to the subfamily Pseudarietitinae.
Paraemericiceras	Gen. et sp. nov		Marin, Aguirre-Urreta & Rawson	Early Cretaceous (Hauterivian)	Agrio Formation		Genus includes new species P. argentinense.
Paraspiticeras bituberculatum	Sp. nov		Marin, Aguirre-Urreta & Rawson	Early Cretaceous (Hauterivian)	Agrio Formation
Parengonoceras chottensis	Sp. nov		Latil & Jaillard	Early Cretaceous
Planisphinctes pirkli	Sp. nov	Valid	Mitta in Mitta & Sherstyukov	Middle Jurassic			A member of the family Perisphinctidae.
Plesechioceras rochai^[19]	Sp. nov	Valid	Vitón et al.	Early Jurassic (Sinemurian)
Proplacenticeras alabushevi^[20]	Nom. nov		Latil, Murphy & Rodda	Cretaceous (Albian-Cenomanian)			The fossil material was originally described as Rapidoplacenticeras sutherlandbrowni (McLearn, 1972) by Alabushev (1988).^[21]
Pseudhimalayites carchelejensis^[22]	Sp. nov	Valid	Parent et al.	Late Jurassic (Tithonian)			A member of the family Aspidoceratidae.
Roberticeras	Gen. et comb. nov	Valid	Latil, Murphy & Rodda	Cretaceous			A member of the family Desmoceratidae. The type species is "Ammonites" dupinianus d'Orbigny (1841); genus also includes other species which were formerly assigned to the genus Beudanticeras.
Rodingites	Gen. et comb. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae belonging to the subfamily Pseudarietitinae. The type species is "Pseudarietites" planissimus Vöhringer (1960); genus also includes "Pseudarietites" carinatus Vöhringer (1960).
Rotopericyclus saourensis	Sp. nov	Valid	Korn in Zohara Malti et al.	Carboniferous (Tournaisian)	Hassi Sguilma Formation
Serpenticyclus^[23]	Gen. et comb. nov	Valid	Becker	Carboniferous (Tournaisian, possibly also Viséan)		?	A member of the family Pericyclidae. The type species is "Helicocyclus" fuscus Korn et al. (2003); genus also includes "H." formosus Korn et al. (2010), "H." inornatus Korn et al. (2010), "H." laxaris Korn et al. (2010) and possibly "H." involutus Kusina in Shimankiy & Kusina (1977) and "H." aberratus Kusina and Konovalova (2004).
Stockumites hofensis^[24]	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)			A member of the family Prionoceratidae belonging to the subfamily Acutimitoceratinae.
Stockumites marocensis	Sp. nov	Valid	Korn & Weyer	Carboniferous			A member of the family Prionoceratidae belonging to the subfamily Acutimitoceratinae.
Stockumites nonaginta	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)			A member of the family Prionoceratidae belonging to the subfamily Acutimitoceratinae.
Stockumites parallelus	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Stockum Limestone		A member of the family Prionoceratidae belonging to the subfamily Acutimitoceratinae.
Stockumites voehringeri	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Prionoceratidae belonging to the subfamily Acutimitoceratinae.
Tanabeceras nakagawaense^[25]	Sp. nov		Shigeta, Sakai & Fujita	Late Cretaceous (Cenomanian)			A member of the family Tetragonitidae.
Tectocyclus	Gen. et sp. et comb. nov	Valid	Becker	Carboniferous (Viséan)			A member of the family Pericyclidae. The type species is T. herbigi; genus also includes "Helicocyclus" divergens Riley (1996).
Tetragonites nanus^[26]	Sp. nov		Shigeta	Late Cretaceous (Coniacian to Campanian)			A member of the family Tetragonitidae.
Tornoceras incisum	Sp. nov	Valid	Söte & Becker	Devonian (Frasnian)	Büdesheim Formation		A member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.
Tornoceras ventrovaricatum	Sp. nov	Valid	Söte & Becker	Devonian (Frasnian)	Büdesheim Formation		A member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.
Ulyanovskiceras^[27]	Gen. et comb. nov	Valid	Delanoy & Baudouin	Early Cretaceous (Aptian)			A member of the family Ancyloceratidae. The type species is "Audouliceras" vyrystaykense Stenshin, Shumilkin & Uspensky (2014); genus also includes "Audouliceras" brusyankense Stenshin, Shumilkin & Uspensky (2014) and "Audouliceras" mordovense Stenshin, Shumilkin & Uspensky (2014).
Virgonisites	Gen. et sp. nov	Valid	Delanoy & Baudouin	Early Cretaceous (Barremian)			A member of the family Ancyloceratidae. The type species is V. sippae.
Vutacuracrioceras	Gen. et comb. nov		Marin, Aguirre-Urreta & Rawson	Early Cretaceous (Hauterivian)			A new genus for "Paraspiticeras" groeberi Aguirre-Urreta (1993).
Weyerella lenis	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae belonging to the subfamily Gattendorfiinae.
Zadelsdorfia oblita	Sp. nov	Valid	Korn & Weyer	Carboniferous (Tournaisian)	Hangenberg Limestone		A member of the family Gattendorfiidae belonging to the subfamily Gattendorfiinae.
Zadelsdorfia zana	Sp. nov	Valid	Korn & Weyer	Carboniferous			A member of the family Gattendorfiidae belonging to the subfamily Gattendorfiinae.

Ammonite research

A study on the swimming capabilities of ammonites, aiming to determine hydrodynamic costs and advantages provided by different conch geometries, is published by Ritterbush & Hebdon (2023).^[28]
A study on the mechanics and fluid dynamics of ammonite swimming is published by De Blasio (2023).^[29]
Revision of the Middle Triassic ammonite assemblage from the Samobor and Žumberak Mountains (Croatia) is published by Vidaković et al. (2023), who consider "Protrachyceras" dorae Salopek (1912) to be the only unambiguously valid species with a holotype from the Gregurić Breg locality, and transfer this species to the genus Eoprotrachyceras.^[30]
Revision of the early Kimmeridgian ammonites from the planula Biohorizon of the Wohlgeschichtete Kalk Formation (Germany) is published by Jantschke & Schweigert (2023).^[31]
Revision of acanthohoplitid taxa from the Aptian strata from Dagestan (Russia) is published by Frau (2023), who considers Protacanthoplites abichi to be a synonym of Acanthohoplites aschiltaensis, and retains A. aschiltaensis as the senior valid name.^[32]
Evidence from the Albian fossil material from the Clansayes locality (France), interpreted as indicative of the presence of sexual dimorphism in Mariella bergeri, as well as indicating that upper Albian Mariella, lower Cenomanian Mariella and lower Cenomanian Hypoturrilites share the same peristome morphology, is presented by Jattiot et al. (2023).^[33]
A specimen of Prionocyclus germari found in association with an aptychus referred to the genus Praestriaptychus is described from the Turonian strata near Úpohlavy (Czech Republic) by Košťák et al. (2023).^[34]
A specimen of Mammites nodosoides, preserved with bite traces interpreted as most likely resulting from a lethal attack of a mosasaur directed at the apertural part of the ammonite with the head and arm crown, is described from the Turonian Bílá Hora Formation (Czech Republic) by Mazuch et al. (2023).^[35]
A study on the evolution of the peculiar morphology of Pravitoceras sigmoidale is published by Misaki, Okamoto & Maeda (2023).^[36]
Shigeta & Maeda (2023) describe new fossil material of ammonites from the Maastrichtian Krasnoyarka Formation (Sakhalin, Russia), including fossils of Zelandites varuna, Gaudryceras seymouriense, Pachydiscus subcompressus and Anagaudryceras mikobokense, and interpret the presence of these species as indicative of the influx of immigrant ammonite species into the Northwest Pacific region during late Maastrichtian, which might have been associated with cooling after the greenhouse Middle Maastrichtian Event.^[37]

Other cephalopods

Name	Novelty	Status	Authors	Age	Type locality	Notes
Aphelaeceras validum	Sp. nov	Valid	Korn in Zohara Malti et al.	Carboniferous (Tournaisian)	Hassi Sguilma Formation
Cenoceras polonicum^[38]	Sp. nov		Jain et al.	Jurassic
Cenoceras rumelangense^[39]	Sp. nov		Weis & Schweigert in Weis, Schweigert & Wittische	Middle Jurassic
Conchorhynchus tabellulis^[40]	Sp. nov	Valid	Martinez	Eocene
Ellesmeroceras humahuacaensis^[41]	Sp. nov	Valid	Cichowolski et al.	Ordovician (Tremadocian)	Santa Rosita Formation
Endoceras novamagnum^[42]	Nom. nov	Valid	Greenfield	Late Ordovician	Saxby locality	A replacement name for Endoceras magnum Stumbur (1956).
Endoceras secundepressum^[43]	Nom. nov	Valid	Greenfield	Middle Ordovician	Jigunsan Formation	A replacement name for Endoceras depressum Yun (2011).
Endolobus rota^[44]	Sp. nov	Valid	Korn & Klug	Carboniferous (Viséan)	Zrigat Formation
Ephippioceras pygops	Sp. nov	Valid	Korn & Klug	Carboniferous (Viséan)	Zrigat Formation	A member of the family Ephippioceratidae.
Epidomatoceras ebbighausenorum	Sp. nov	Valid	Korn & Klug	Carboniferous (Viséan)	Hamou-Rhanem Formation	A member of the family Grypoceratidae.
Foveroceras^[45]	Gen. et sp. nov	Valid	Leonova & Shchedukhin	Permian (Asselian-Sakmarian)		A member of Nautilida belonging to the family Permoceratidae. The type species is F. magnum.
Germanonautilus warthi^[46]	Sp. nov	Valid	Schweigert	Early Jurassic (Pliensbachian)	Numismalismergel Formation
Linteroceras^[47]	Nom. nov	Valid	Mironenko	Carboniferous		A replacement name for Linter Shimansky (1968).
Liroceras karaouii	Sp. nov	Valid	Korn & Klug	Carboniferous (Viséan)	Mougoui Ayoun Formation
Liroceras vermis	Sp. nov	Valid	Korn & Klug	Carboniferous (Viséan)	Hamou-Rhanem Formation
Micronautilus^[48]	Gen. et 2 sp. nov	Valid	Branger	Middle Jurassic (Bathonian)		A member of the family Paracenoceratidae. The type species is M. evolutus; genus also includes M. minoti.
Nautilaphractus^[49]	Nom. nov	Valid	Ceccolini & Cianferoni	Carboniferous		A replacement name for Aphractus Shimansky (1967).
Omorphoceras	Gen. et sp. nov	Valid	Leonova & Shchedukhin	Permian (Asselian-Sakmarian)		A member of the family Grypoceratidae. The type species is O. igori.
Shikhanonautilus compressus^[50]	Sp. nov	Valid	Shchedukhin	Permian (Asselian-Sakmarian)		A member of the family Liroceratidae.
Sichuanobelus luxiensis^[51]	Sp. nov		Ma et al.	Late Triassic (Carnian)	Xiaowa Formation	A member of Belemnitida belonging to the family Sinobelemnitidae.
Solenochilus lucynae	Sp. nov	Valid	Korn & Klug	Carboniferous (Viséan)	Mougoui Ayoun Formation
Solenochilus pohlei	Sp. nov	Valid	Korn & Klug	Carboniferous (Viséan)	Mougoui Ayoun Formation
Stenopoceras (Leptodomatoceras) bashkiricum	Sp. nov	Valid	Leonova & Shchedukhin	Permian (Asselian-Sakmarian)		A member of the family Grypoceratidae.
Temnocheilus aubrechtovae	Sp. nov	Valid	Korn & Klug	Carboniferous (Viséan)	Mougoui Ayoun Formation	A member of the family Trigonoceratidae.
Temnocheilus imazighenorum	Sp. nov	Valid	Korn & Klug	Carboniferous (Viséan)	Zrigat Formation	A member of the family Trigonoceratidae.
Trocholites chaloupkai^[52]	Sp. nov	Valid	Aubrechtová, Turek & Manda	Ordovician (Katian)	Upper Zahořany Formation
Uralharuspex	Nom. nov	Valid	Ceccolini & Cianferoni	Carboniferous		A replacement name for Haruspex Shimansky (1968).
Vampyrofugiens^[53]	Gen. et sp. nov	Valid	Rowe et al.	Middle Jurassic (Callovian)	La Voulte-sur-Rhône lagerstätte	A member of Vampyromorpha belonging to the group Loligosepiina and the family Geopeltidae. The type species is V. atramentum.
Vestinautilus kesslerae	Sp. nov	Valid	Korn & Klug	Carboniferous (Viséan)	Zrigat Formation	A member of the family Trigonoceratidae.

Other cephalopod research

A study on the phylogenetic relationships of belemnites is published by Stevens et al. (2023).^[54]
Dzyuba et al. (2023) report the discovery of the fossil material of Arcobelus cf. krimholzi from the Jurassic (Toarcian–Aalenian) strata from the Kuoika kimberlite field (northeastern Siberian Platform, Olenek Uplift), and interpret putative Late Jurassic or Early Cretaceous belemnites from the studied area as possibly of Bajocian–Bathonian age.^[55]
Evidence from clumped and stable isotopes and trace element data for three specimens from the Valanginian of southern Tibet and Madagascar, interpreted as indicating that Acroteuthis acrei and Duvalia sp. occupied shallower and warmer waters than Hibolithes jaculoides and that the latter belemnite was a fast swimmer that undertook vertical migration in the water column, is presented by Wang et al. (2023).^[56]
Dernov (2023) reports the preservation of color patterns on conchs of nautiloid cephalopods from the Carboniferous (Moscovian) Kamenskaya Formation (Luhansk Oblast), interpreted as indicative of the presence of disruptive coloration.^[57]
Wilmsen (2023) redescribes the Coniacian nautilid "Nautilus" sinuatoplicatus and transfers it to the genus Anglonautilus, filling a gap in the fossil record of this genus which was previously unknown from the late Cenomanian to early Campanian.^[58]
A study aiming to determine the metabolic rates of ammonites and nautiloid cephalopods living at the end of the Cretaceous is published by Tajika et al. (2023), who find that the nautiloid Eutrephoceras had a lower metabolic rate than co-occurring ammonites, and argue that the lower metabolic rate in nautiloids might have been an advantage during the Cretaceous–Paleogene extinction event.^[59]
Klug et al. (2023) report evidence of preservation of axial nerve cords in specimens of Jurassic cephalopods from France and Germany.^[60]
Syllipsimopodi bideni, originally described as a member of the clade Vampyropoda, is reinterpreted as a probable junior synonym of Gordoniconus beargulchensis and unlikely to be a vampyropod by Klug et al. (2023);^[61] in a subsequent study Whalen & Landman (2023) support the interpretation of S. bideni as distinct from G. beargulchensis, but hint that further analyses might be needed to confirm the hypothesis that it is a vampyropod.^[62]
Rogov et al. (2023) report the discovery of jaws of decabrachian coleoids from the Toarcian deposits of the Vilyui River basin (Sakha, Russia), representing the first finding of coleoid jaws in the Lower Jurassic strata in Siberia reported to date.^[63]
Tanabe & Misaki (2023) describe new coleoid fossil material from the Upper Cretaceous Yezo Group (Japan), including a large upper jaw of an indeterminate member of Oegopsida and two lower jaws possibly belonging to members of the species Longibelus matsumotoi, and interpret the anatomy of the studied lower jaws as supporting the interpretation of Longibelus as a relative of Decapodiformes.^[64]
An assemblage of coleoid cephalopods, including the latest record of Belosaepia blainvillei, is described from the Eocene (Priabonian) Mandrykivka Beds (Ukraine) by Dernov & Demianov (2023).^[65]
Mironenko (2023) describes phosphatized jaws of cephalopods (mostly coleoids, but also one nautilid specimen) from the Upper Jurassic, Lower and Upper Cretaceous localities in Russia, including jaws likely belonging to large-bodied coleoids.^[66]

Bivalves

Name	Novelty	Status	Authors	Age	Type locality	Notes
Acharax frenademezi^[67]	Sp. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of the family Solemyidae.
Alena^[68]	Gen. et sp. nov		Polechová, Zicha & Rak	Ordovician (Sandbian)	Letná Formation	A member of Pteriomorphia, possibly belonging to the group Cyrtodontida. The type species is A. pustulosa. The generic name is shared with Alena Navas (1916).
Allemanella^[69]	Gen. et comb. nov	Valid	Cooper	Cretaceous		A member of Trigoniida belonging to the family Rutitrigoniidae and the subfamily Syrotrigoniinae. The type species is "Quoiecchia" sigeli Leanza & Garate Zubillaga (1987); genus also includes "Buchotrigonia" biroi Pérez & Reyes (1986), "Trigonia" boiti Lissón (1930), "Buchotrigonia" chilensis Pérez & Reyes (1986) and "Syrotrigonia" obesa Pérez & Reyes (1997).
Bakevellia (Bakevellia) preromangica	Sp. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of the family Bakevelliidae.
Bathyisognomon^[70]	Gen. et sp. nov	Valid	Hickman	Eocene	Keasey Formation	A member of the family Isognomonidae. The type species is B. smithwickensis.
Delectopecten keaseyorum	Sp. nov	Valid	Hickman	Paleogene	Keasey Formation	A species of Delectopecten.
Delectopecten kieli	Sp. nov	Valid	Hickman	Paleogene	Keasey Formation	A species of Delectopecten.
Earlpackardia methowensis^[71]	Sp. nov	Valid	Halligan	Early Cretaceous (Albian)		A member of Trigoniida belonging to the family Rutitrigoniidae.
Edmondia hautmanni	Sp. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of the family Edmondiidae.
Etayosernella	Gen. et comb. et sp. nov	Valid	Cooper	Early Cretaceous		A member of Trigoniida belonging to the family Rutitrigoniidae and the subfamily Syrotrigoniinae. The type species is "Trigonia (Laevitrigonia)" scheibei Dietrich (1938); genus also includes new species E. noetlingi.
Etheripecten stuflesseri	Sp. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of Pectinida belonging to the family Heteropectinidae.
Gardenapecten	Gen. et comb. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of Pectinida belonging to the superfamily Aviculopectinoidea and the family Asoellidae. The type species is "Pecten (Aviculopecten)" trinkeri Stache (1878); genus also includes "Pecten (Aviculopecten)" comelicanus Stache (1878).
Glycymeris (Glycymeris) radiolyrata exaggerata^[72]	Ssp. nov	Valid	Moerdijk & van Nieulande	Pliocene		A member of the family Glycymerididae.
Incagonia	Gen. et comb. nov	Valid	Cooper	Cretaceous		A member of Trigoniida belonging to the family Rutitrigoniidae and the subfamily Syrotrigoniinae. The type species is "Trigonia" mathewsi Richards (1947); genus also includes "Trigonia" flexicostata Fritzsche (1924), "Trigonia" forti Lissón (1930), "Trigonia" gerthi Lissón (1930), "Trigonia" inca Fritzsche (1924), "Trigonia" lorentii Dana (1849) and "Trigonia" paradisensis Lissón (1907).
Ionesimactra^[73]	Nom. nov	Valid	Signorelli			A member of the family Mactridae; a replacement name for Caspimactra Ionesi. The type species is "Mactra" caspia Eichwald.
Isorropodon humptulipsense^[74]	Sp. nov	Valid	Kiel, Amano & Goedert	Eocene	Humptulips Formation	A member of the family Vesicomyidae.
Ladinomya	Gen. et sp. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of the superfamily Trigonioidea, the type genus of the new family Ladinomyidae. The type species is L. fosteri.
Leguminaia hedenborgi^[75]	Sp. nov	Valid	Schneider & Linse	Pliocene–Pleistocene boundary	Kritika Formation	A member of the family Unionidae belonging to the subfamily Gonideinae.
Limopsis squiresi	Sp. nov	Valid	Hickman	Paleogene	Keasey Formation	A species of Limopsis.
Lovaralucina	Gen. et sp. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of the family Lucinidae. The type species is L. covidi.
Lucina dickersoni^[76]	Nom. nov	Valid	Pacaud et al.	Paleocene		A species of Lucina; a replacement name for Phacoides quadrata Dickerson (1914).
"Lucina" hungarica	Nom. nov	Valid	Pacaud et al.	Triassic		A replacement name for Lucina quadrata Kutassy (1933).
Lusitanigonia	Gen. et comb. nov	Valid	Cooper	Late Jurassic		A member of Trigoniida belonging to the family Rutitrigoniidae and the subfamily Syrotrigoniinae. The type species is "Trigonia" freixialensis Choffat (1885); genus also includes "Trigonia" kobyi Choffat (1885).
Macomopsis onubensis^[77]	Sp. nov	Valid	Brunetti & Della Bella	Pliocene		A member of the family Tellinidae.
Macomopsis saccoi	Sp. nov	Valid	Brunetti & Della Bella	Pliocene (Piacenzian)		A member of the family Tellinidae.
Matheronia carinata^[78]	Sp. nov		Masse, Fenerci-Masse & Bucur	Early Cretaceous (Barremian-Aptian)		A rudist bivalve belonging to the family Requieniidae.
Matheronia dacica	Sp. nov		Masse, Fenerci-Masse & Bucur	Early Cretaceous (Barremian)		A rudist bivalve belonging to the family Requieniidae.
Matheronia nerae	Sp. nov		Masse, Fenerci-Masse & Bucur	Early Cretaceous (Barremian-Aptian)		A rudist bivalve belonging to the family Requieniidae.
Matheronia silvaeregis	Sp. nov		Masse, Fenerci-Masse & Bucur	Early Cretaceous (Aptian)		A rudist bivalve belonging to the family Requieniidae.
Meleagrinella golberti^[79]	Sp. nov	Valid	Lutikov & Arp	Early Jurassic (Toarcian)		A member of the family Oxytomidae. Published online in 2023, but the issue date is listed as December 2022.
Meleagrinella prima	Sp. nov	Valid	Lutikov in Lutikov & Arp	Early Jurassic (Toarcian)		A member of the family Oxytomidae. Published online in 2023, but the issue date is listed as December 2022.
Miltha (sensu lato) romaniae^[80]	Sp. nov	Valid	Kiel, Sami & Taviani	Miocene		A member of the family Lucinidae.
Moerella etrusca	Sp. nov	Valid	Brunetti & Della Bella	Pliocene		A member of the family Tellinidae.
Moerella hispanica	Sp. nov	Valid	Brunetti & Della Bella	Pliocene		A member of the family Tellinidae.
Nuculoma douvillei^[81]	Sp. nov	Valid	Ayoub-Hannaa, Fürsich & Abdelhady	Middle Jurassic (Bathonian to Callovian)	Kehailia Formation	A member of the family Nuculidae.
Nuculoma sinaiensis	Sp. nov	Valid	Ayoub-Hannaa, Fürsich & Abdelhady	Jurassic (Toarcian to lower Kimmeridgian)	Bir Maghara Formation	A member of the family Nuculidae.
Pachygervillia^[82]	Gen. et sp. et comb. nov	Valid	Posenato & Crippa	Early Jurassic (Sinemurian–Toarcian)	Rotzo Formation	A member of Ostreida belonging to the family Plicatostylidae. The type species is P. anguillaensis; genus also includes "Perna" taramellii Boehm (1884).
Pachytraga carpathica^[83]	Sp. nov		Masse, Fenerci-Masse & Bucur	Early Cretaceous (Barremian)		A rudist bivalve belonging to the family Caprinidae.
Pachytraga gracilis^[84]	Sp. nov		Masse, Frau & Fenerci-Masse	Early Cretaceous (Barremian)		A rudist bivalve belonging to the family Caprinidae.
Palaeolima badiotica	Sp. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of the family Limidae.
Palaeoneilo aegyptiaca	Sp. nov	Valid	Ayoub-Hannaa, Fürsich & Abdelhady	Jurassic (Bajocian to Bathonian)	Kehailia Formation	A member of Nuculanida belonging the family Cucullellidae.
Parvitrigonia	Gen. et sp. nov	Valid	Halligan	Early Cretaceous (Albian)		A member of Trigoniida belonging to the family Rutitrigoniidae. The type species is P. cooperi.
Pinna pacata^[85]	Sp. nov	Valid	Shilekhin, Mazaev & Biakov	Permian		A species of Pinna.
Pleurophopsis thieli	Sp. nov	Valid	Kiel, Amano & Goedert	Oligocene	Makah Formation	A member of the family Vesicomyidae.
Pliocardia? guthrieorum	Sp. nov	Valid	Kiel, Amano & Goedert	Oligocene	Lincoln Creek Formation	Possibly a species of Pliocardia.
Promytilus merlai	Sp. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of the family Mytilidae.
Propeamussium (Parvamussium) mistensis	Sp. nov	Valid	Hickman	Paleogene	Keasey Formation	A species of Propeamussium.
Prospondylus shakhtauensis^[86]	Sp. nov	Valid	Biakov in Biakov & Mazaev	Permian		A member of Pectinida belonging to the family Prospondylidae.
Pseudomiltha horcsarriu	Sp. nov	Valid	Pacaud et al.	Eocene (Bartonian)		A member of the family Lucinidae.
Sisonia ultimoi	Sp. nov	Valid	Kiel, Sami & Taviani	Miocene (Langhian)		A bivalve of uncertain affinities.
Squiresica plana	Sp. nov	Valid	Kiel, Amano & Goedert	Oligocene	Lincoln Creek Formation	A member of the family Vesicomyidae.
Squiresica yooni	Sp. nov	Valid	Kiel, Amano & Goedert	Miocene	Duho Formation	A member of the family Vesicomyidae.
Streblopteria gracilicosta^[87]	Sp. nov	Valid	Biakov	Permian		A member of Pectinida belonging to the family Streblochondriidae.
Streblopteria parenensis	Sp. nov	Valid	Biakov	Permian		A member of Pectinida belonging to the family Streblochondriidae.
Tambanella? stetteneckensis	Sp. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of the family Bakevelliidae.
Thiadensia^[88]	Gen. et comb. nov		Mitchell	Late Cretaceous (Maastrichtian)		A rudist bivalve belonging to the subfamily Radiolitidae. The type species is "Bournonia" planasi Thiadens (1936).
Valenciella	Gen. et comb. nov	Valid	Cooper	Cretaceous		A member of Trigoniida belonging to the family Rutitrigoniidae and the subfamily Syrotrigoniinae. The type species is "Trigonia" picteti Coquand (1863); genus also includes "Trigonia" analoga Douvillé (1916), "Trigonia" depauperata Douvillé (1916), "Trigonia" higazyi Abbass (1962), "Trigonia" loutfyi Abbass (1962), "Trigonia" magharensis Abbass (1962) and "Trigonia" undulatocostata Blanckenhorn (1890).
Vermuntia	Gen. et comb. nov		Mitchell	Late Cretaceous		A rudist bivalve belonging to the subfamily Radiolitidae. The type species is "Radiolites" macroplicatus Whitfield (1897); genus also includes "Branislavia" stellaplicatus Mitchell & Ramsook (2009).
Volsellina carinata	Sp. nov	Valid	Prinoth & Posenato	Permian (Changhsingian)	Bellerophon Formation	A member of the family Mytilidae.
Yuexiconcha^[89]	Gen. et sp. nov	Valid	Zhang, Niu & Johnston in Niu et al.	Ordovician	Dongchong Formation	A member of Protobranchia, possibly belonging to the family Nuculidae. The type species is Y. duplicata.

Bivalve research

Description of shell microstructure and muscle attachment scars from the inner surface on the shell in specimens of Fordilla troyensis from the Cambrian Aftenstjernesø Formation (Greenland) is published by Peel (2023).^[90]
A study on the fossil record of bivalves is published by Zhou et al. (2023), who report that bivalves did not undergo and increase in taxonomic, morphological and functional diversity until the Ordovician, and did not undergo a burst of functional diversity relative to taxonomic diversity even during their Ordovician diversification.^[91]
A study on the diversification dynamics of bivalves and brachiopods throughout their evolutionary histories is published by Guo et al. (2023), who interpret their findings as indicating that the switch from brachiopods to bivalves as major seabed organisms was unlikely to be caused by competitive exclusion of brachiopods by bivalves, but rather was likely caused by loss of brachiopod diversity in the Permian–Triassic extinction event and by bivalve diversification in the Cretaceous and Cenozoic that wasn't matched by brachiopods.^[92]
A study on changes of taxonomic and functional diversity of bivalves during the Triassic-Jurassic transition is published by Abdelhady et al. (2023), who consider the sea-level fall causing the destruction of shallower marine habitats to be the primary cause of bivalve extinction in the studied time interval.^[93]
Description of a new Cenomanian rudist assemblage from the Gattar Member of the Zebbag Formation (Tunisia), and study on the relationships between the new assemblage and other Cenomanian rudist assemblages from North Africa and the Levant region, is published by Philip, Negra & Bachari (2023).^[94]
Özer & Săsăran (2023) reexamine the holotype and paratypes of Lattenbergites hermi, and interpret it as a junior synonym of the radiolitid species Joufia milovanovici.^[95]
Evidence from fossils from the Pecínov Member of the Peruc–Korycany Formation and from the Bílá Hora Formation (Czech Republic), indicative of changes of the composition of the bivalve assemblages resulting from the Cenomanian-Turonian boundary event, is presented by Kunstmüllerová & Košťák (2023).^[96]

Gastropods

Name	Novelty	Status	Authors	Age	Type locality	Notes
Agathotoma estherae^[97]	Sp. nov	Valid	Landau, Harzhauser & Giannuzzi-Savelli	Pliocene		A species of Agathotoma.
Akburunella laminaris^[98]	Sp. nov	Valid	Guzhov	Miocene		Published online in 2023, but the issue date is listed as December 2022.
Akburunella nefanda archaica	Ssp. nov	Valid	Guzhov	Miocene		Published online in 2023, but the issue date is listed as December 2022.
Akburunella sinuosa	Sp. nov	Valid	Guzhov	Miocene		Published online in 2023, but the issue date is listed as December 2022.
Akburunella spinosa	Sp. nov	Valid	Guzhov	Miocene		Published online in 2023, but the issue date is listed as December 2022.
Aliculastrum suratensis^[99]	Sp. nov		Banerjee & Halder	Eocene	Cambay Shale	A species of Aliculastrum.
Altadema hausmannae^[100]	Sp. nov	Valid	Nützel & Karapunar	Early Triassic	Werfen Formation	A member of the family Goniasmatidae.
Alvania praetermissa^[101]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene		A species of Alvania.
Ammotectonica^[102]	Gen. et sp. et comb. nov	Valid	Harzhauser & Landau	Miocene and Pliocene		A member of the family Architectonicidae. The type species is A. gregorovae; genus also includes "Solarium" emiliae Semper (1861), "Solarium" deshayesii Michelotti (1847) and "Solarium" soproniense Strausz (1960).
Andonia fosseensis	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene
Aspella tusciae^[103]	Sp. nov	Valid	Forli, Cresti & Pagli	Pliocene		A species of Aspella.
Athleta (Volutospina) baili^[104]	Sp. nov	Valid	Pacaud & Ledon	Eocene (Bartonian)		A species of Athleta.
Attiliosa emilyae^[105]	Sp. nov	Valid	Lozouet	Oligocene		A species of Attiliosa.
Attiliosa septaspinosa	Sp. nov	Valid	Lozouet	Oligocene		A species of Attiliosa.
Attiliosa subgretae	Sp. nov	Valid	Lozouet	Oligocene		A species of Attiliosa.
Bela obesoiberica	Sp. nov	Valid	Landau, Harzhauser & Giannuzzi-Savelli	Pliocene		A species of Bela.
Bela olivoidea	Sp. nov	Valid	Landau, Harzhauser & Giannuzzi-Savelli	Pliocene		A species of Bela.
Bernaya kaylinae^[106]	Sp. nov	Valid	Squires & Groves	Eocene	Llajas Formation	A species of Bernaya.
Bittium miradouroense^[107]	Sp. nov	Valid	Sacchetti, Landau & Ávila	Pliocene		A species of Bittium.
Bizetiella attiliosaformis	Sp. nov	Valid	Lozouet	Miocene		A species of Bizetiella.
Bolma redoniana	Nom. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene		A species of Bolma; a replacement name for Turbo trochleatus Millet.
Brachystomia succineiformis	Sp. nov	Valid	Guzhov	Miocene		A species of Brachystomia. Published online in 2023, but the issue date is listed as December 2022.
Brookesena romandiola^[108]	Sp. nov	Valid	Tabanelli et al.	Pliocene		A species of Brookesena.
Caecum roederi^[109]	Sp. nov	Valid	Raines, Powell & LaFollette	Miocene		A species of Caecum.
Calagrassor mathiasi^[110]	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A species of Calagrassor.
Calliostoma nandori	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A species of Calliostoma.
Calotrophon vaporosus	Sp. nov	Valid	Lozouet	Oligocene		A species of Calotrophon.
Carychium nashuaense^[111]	Sp. nov	Valid	Jochum, Lee & Portell in Jochum et al.	Early Pleistocene	Nashua Formation	A species of Carychium.
Cerion (Strophiops) palacioi^[112]	Sp. nov	Valid	Suárez	Pliocene-Pleistocene	Río Maya Formation	A species of Cerion.
Cerithiella bisulcata	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene		A species of Cerithiella.
Chauvetia brunettii^[113]	Sp. nov	Valid	Landau & Micali	Pliocene		A species of Chauvetia.
Chauvetia fenestrata	Sp. nov	Valid	Landau & Micali	Pliocene (Piacenzian)		A species of Chauvetia.
Chauvetia fortiornata	Sp. nov	Valid	Landau & Micali	Pliocene (Piacenzian)		A species of Chauvetia.
Chauvetia hoffmani	Sp. nov	Valid	Landau & Micali	Pliocene (Piacenzian)		A species of Chauvetia.
Chauvetia janseni	Sp. nov	Valid	Landau & Micali	Pliocene (Piacenzian)		A species of Chauvetia.
Chauvetia obesa	Sp. nov	Valid	Landau & Micali	Pliocene (Piacenzian)		A species of Chauvetia.
Chauvetia oliveri	Sp. nov	Valid	Landau & Micali	Pliocene (Piacenzian)		A species of Chauvetia.
Chauvetia pseudopelorcei	Sp. nov	Valid	Landau & Micali	Pliocene (Piacenzian)		A species of Chauvetia.
Chauvetia sinuosa	Sp. nov	Valid	Landau & Micali	Pliocene (Piacenzian)		A species of Chauvetia.
Chauvetia solida	Sp. nov	Valid	Landau & Micali	Pliocene (Piacenzian)		A species of Chauvetia.
Chauvetia spinosa	Sp. nov	Valid	Landau & Micali	Pliocene (Piacenzian)		A species of Chauvetia.
Chesathais pungoensis^[114]	Sp. nov	Valid	Petuch & Berschauer	Miocene	Pungo River Formation
Chicoreus marcominii	Sp. nov	Valid	Lozouet	Miocene		A species of Chicoreus.
Chicoreus sacyi	Sp. nov	Valid	Lozouet	Oligocene		A species of Chicoreus.
Cingulina eamesi	Sp. nov		Banerjee & Halder	Eocene	Cambay Shale	A species of Cingulina.
Cirsotrema kokayi	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A species of Cirsotrema.
Clanculus s. l. gulyasi	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A member of the family Trochidae.
Clavatula s. l. barnabasi	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A member of the family Clavatulidae.
Clavatula s. l. istvani	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A member of the family Clavatulidae.
"Clavatula" pettkoi^[115]	Sp. nov	Valid	Biskupič	Miocene	Studienka Formation	A member of the family Clavatulidae.
Conomurex indica^[116]	Sp. nov	Valid	Bose, Das & Saha	Miocene	Dwarka Basin	A species of Conomurex.
Conotomaria dovilleae^[117]	Sp. nov	Valid	Chaix & Grenier	Late Cretaceous (Campanian)		A member of the family Pleurotomariidae.
Conotomaria pilonae	Sp. nov	Valid	Chaix & Grenier	Late Cretaceous (Campanian)		A member of the family Pleurotomariidae.
Cornirostra anistratenkorum umbilicaris	Ssp. nov	Valid	Guzhov	Miocene		Published online in 2023, but the issue date is listed as December 2022.
Cossmannina australis^[118]	Sp. nov		Ferrari	Early Jurassic (Pliensbachian)	Lepá Formation	A member of Acteonoidea belonging to the family Tubiferidae.
Costoanachis haurzhauseri	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene		A species of Costoanachis.
Costoanachis malaquiasi^[119]	Sp. nov	Valid	Landau, Harzhauser & Monsecour	Pliocene (Piacenzian)		A species of Costoanachis.
Costosyrnola taptiensis	Sp. nov		Banerjee & Halder	Eocene	Cambay Shale	A species of Costosyrnola.
Cylichna (Cylichna) ypresiana	Sp. nov		Banerjee & Halder	Eocene	Cambay Shale	A species of Cylichna.
Cylindrobullina caquelensis	Sp. nov		Ferrari	Early Jurassic (Pliensbachian)	Lepá Formation	A member of Acteonoidea belonging to the family Cylindrobullinidae.
Cymia (sensu lato) praecaerulea	Sp. nov	Valid	Lozouet	Oligocene		A member of the family Muricidae.
Cymia (sensu lato) subcaerulea	Sp. nov	Valid	Lozouet	Oligocene		A member of the family Muricidae.
Cypraedia misrensis^[120]	Nom. nov	Valid	Pacaud	Eocene (Bartonian)		A member of the family Ovulidae; a replacement name for Cypraea (Cypraedia) arabica Cuvillier (1935).
Dentimargo barnai	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A species of Dentimargo.
Dilatilabrum mahalonobisi	Sp. nov	Valid	Bose, Das & Saha	Miocene	Dwarka Basin
Echinophoria statioliteralis^[121]	Sp. nov		Darragh			A species of Echinophoria.
Ecphora (Powhatan) grulkei	Sp. nov	Valid	Petuch & Berschauer			A species of Ecphora.
Ecphora roxaneae dalli	Ssp. nov	Valid	Petuch & Berschauer		Goose Creek Limestone
Edrozeba	Gen. et 4 sp. et comb. nov	Valid	Guzhov	Miocene		A member of the family Hydrobiidae. The type species is E. caeca; genus also includes new species E. angulata, E. minuta and E. striata, as well as "Hydrobia" enikalensis Kolesnikov (1935). Published online in 2023, but the issue date is listed as December 2022.
Ellobium kerwaense^[122]	Sp. nov	Valid	Harzhauser, Pacaud & Landau	Oligocene (Chattian)	Mány Formation	A species of Ellobium.
Eocypraea judithsmithae	Sp. nov	Valid	Groves & Squires	Eocene	Llajas Formation	A member of the family Eocypraeidae.
Eoellobium	Gen. et comb. nov	Valid	Harzhauser, Pacaud & Landau	Eocene (Bartonian)		A member of the family Ellobiidae. The type species is "Auricula" heberti Vasseur (1881); genus also includes "Melampus" britannus Vasseur (1882) and "Auricula" simplex Cossmann (1895).
Eopterodonta^[123]	Nom. nov	Valid	Pacaud	Late Cretaceous		A member of the family Tylostomatidae; a replacement name for Pterodonta d'Orbigny (1843).
Erato mayeri	Sp. nov	Valid	Sacchetti, Landau & Ávila	Pliocene		A species of Erato.
Euspira? louiemarincovichi^[124]	Sp. nov		Powell & Dineen	Pleistocene (Gelasian)	Gubik Formation	Possibly a species of Euspira.
Falsipyrgula ? coronata^[125]	Sp. nov	Valid	Neubauer & Wesselingh	Pleistocene (Gelasian)	Kolankaya Formation	A member of the family Hydrobiidae.
Favartia faviai	Sp. nov	Valid	Lozouet	Miocene		A species of Favartia.
Galeodea fuscirivularis	Sp. nov		Darragh			A species of Galeodea.
Galeodea goudeyi	Sp. nov		Darragh			A species of Galeodea.
Gibbula kralli	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A species of Gibbula.
Glabrocingulum (Stenozone) heminodosus^[126]	Sp. nov		Pinilla & Taboada	Permian	Pampa de Tepuel Formation	A member of the family Eotomariidae.
Globecphora mardieae	Sp. nov	Valid	Petuch & Berschauer
Globulocerithium^[127]	Gen. et nom. nov	Valid	Pacaud	Paleogene		A member of the family Cerithiidae. The type species is "Cerithium" globulosus Deshayes (1833); genus also includes "Cerithium" coezi Boussac (1911), "Cerithium" dallagonis Oppenheim (1894), "Cerithium" felix Deshayes (1864), "Cerithium" filifer Deshayes (1833), "Cerithium" filigrana von Koenen (1891), "Cerithium" guilielmi de Raincourt (1877), "Cerithium" intradentatum Deshayes (1864), "Cerithium" meneghinii Michelotti (1861), "Potamides" montense Briart & Cornet (1873), "Cerithium" petrafixense Cossmann & Lambert (1884), "Cerithium" piriforme Defrance (1817), "Cerithium" semicostatum Deshayes (1833), "Cerithium" tenuistriatum Melleville (1843), "Cerithium" tournissanense Doncieux (1908), "Cerithium" tumidum Braun in Walchner (1851), "Cerithium" vandenheckei Bellardi (1852), "Pyrazus" vignyensis Bouniol (1981) and Globulocerithium nautagarona (a replacement name for Cerithium coloniae Leymerie, 1878).
Graecoanatolica alcicekorum	Sp. nov	Valid	Neubauer & Wesselingh	Pleistocene (Gelasian)	Kolankaya Formation	A species of Graecoanatolica.
Hartmutix^[128]	Gen. et comb. nov	Valid	Neubauer & Harzhauser	Eocene		Possibly a member of the family Sphincterochilidae. The type species is "Helix" edwardsi Deshayes (1863).
Harzhauseria	Gen. et sp. nov	Valid	Neubauer & Wesselingh	Pleistocene (Gelasian)	Kolankaya Formation	A member of the family Hydrobiidae. The type species is H. schizopleura.
Hastula wilmulderae^[129]	Sp. nov	Valid	Landau & Harzhauser	Pliocene (Piacenzian)		A species of Hastula.
Heliacus globosus	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	A species of Heliacus.
Helix kadolskyi	Nom. nov	Valid	Neubauer & Harzhauser	Miocene		A species of Helix; a replacement name for Helix toulai Kojumdgieva (1969)
Hemithersitea kanerus	Sp. nov	Valid	Bose, Das & Saha	Miocene	Dwarka Basin
Hemithersitea nadharus	Sp. nov	Valid	Bose, Das & Saha	Miocene	Dwarka Basin
Hydrobia neofrauenfeldi	Sp. nov	Valid	Guzhov	Miocene		A species of Hydrobia. Published online in 2023, but the issue date is listed as December 2022.
Inella bentae^[130]	Sp. nov	Valid	Landau, Bakker & Marques da Silva	Pliocene	Estepona Basin	A species of Inella.
Iraklimelania minutissima	Sp. nov	Valid	Neubauer & Wesselingh	Pleistocene (Gelasian)	Kolankaya Formation	A member of the family Hydrobiidae.
Iraklimelania submediocarinata	Sp. nov	Valid	Neubauer & Wesselingh	Pleistocene (Gelasian)	Kolankaya Formation	A member of the family Hydrobiidae.
Islamiella^[131]	Gen. et 2 sp. nov	Valid	Guzhov	Miocene		A member of the family Hydrobiidae. Genus includes I. miocenica and I. maeotica.
Kantoria^[132]	Gen. et comb. et sp. nov	Valid	Landau & Harzhauser	Miocene and Pliocene		A member of the family Pseudomelatomidae. The type species is "Pleurotoma" coquandi Bellardi (1847); genus also includes new species K. castoris, as well as "Pleurotoma" lamarckii Michelotti (1847), "Knefastia" sinuslata Vera-Peláez (2002) and "Comitas" catherinae Vera-Peláez (2022).
Laschmaspira lirata	Sp. nov	Valid	Nützel & Karapunar	Late Triassic (Carnian)	Hallstatt Limestone	A member of the family Goniasmatidae.
Lagunaspira	Gen. et sp. nov		Pinilla & Taboada	Permian	Pampa de Tepuel Formation	A member of the family Eotomariidae. The type species is L. labrocostellata.
Leucotina costata^[133]	Sp. nov	Valid	Guzhov	Miocene		A species of Leucotina
Leucotina excussa	Sp. nov	Valid	Guzhov	Miocene		A species of Leucotina
Leucotina ovata	Sp. nov	Valid	Guzhov	Miocene		A species of Leucotina
Leucotina ovatoides	Sp. nov	Valid	Guzhov	Miocene		A species of Leucotina
Mangelia pseudoceddaensis	Sp. nov	Valid	Landau, Harzhauser & Giannuzzi-Savelli	Pliocene		A species of Mangelia.
Mcleanarene^[134]	Gen. et nom. nov	Valid	Pacaud	Late Cretaceous (Campanian)		A member of the family Areneidae. The type species is M. taluniya (a replacement name for Arene mcleani Kiel & Bandel, 2002).
Megastomia canaliculata	Sp. nov		Banerjee & Halder	Eocene	Cambay Shale	A species of Megastomia.
Megastomia carinata	Sp. nov		Banerjee & Halder	Eocene	Cambay Shale	A species of Megastomia.
Mitrella avilai	Sp. nov	Valid	Landau, Harzhauser & Monsecour	Pliocene (Piacenzian)		A species of Mitrella.
Mitrella pagodiformis	Sp. nov	Valid	Landau, Harzhauser & Monsecour	Pliocene (Piacenzian)		A species of Mitrella.
Mitrella soveri^[135]	Sp. nov	Valid	Kovács & Vicián	Miocene		A species of Mitrella.
Mitrella velerinensis	Sp. nov	Valid	Landau, Harzhauser & Monsecour	Pliocene (Piacenzian)		A species of Mitrella.
Monteiroconus strauszi^[136]	Sp. nov	Valid	Kovács & Vicián	Miocene	Lajta Limestone Formation	A member of the family Conidae.
Morula (sensu lato) duplex	Sp. nov	Valid	Lozouet	Oligocene		A member of the family Muricidae.
Nipteraxis deformatus	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation
Nucella demouthae^[137]	Sp. nov	Valid	Powell, Roth & Garcia	Miocene	Wilson Grove Formation	A species of Nucella.
Ocenebra pseudoexcoelata	Sp. nov	Valid	Lozouet	Oligocene		A species of Ocenebra.
Ocenebra tarusatensis	Sp. nov	Valid	Lozouet	Oligocene		A species of Ocenebra.
Ocinebrina deaki	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A species of Ocinebrina.
Odostomia caucasica	Sp. nov	Valid	Guzhov	Miocene		A species of Odostomia. Published online in 2023, but the issue date is listed as December 2022.
Odostomia concavata	Sp. nov		Banerjee & Halder	Eocene	Cambay Shale	A species of Odostomia.
Ophieulima ligeriana	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene		A species of Ophieulima.
Ormastralium erazmusi	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A member of the family Turbinidae.
Orthonychia yutaroi^[138]	Sp. nov	Valid	Ebbestad in Nützel et al.	Ordovician (Katian)	Boda Limestone	A member of the family Orthonychiidae.
Oxymeris transleithana^[139]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Lajta Formation	A species of Oxymeris.
Pachycrommium gourguesi^[140]	Sp. nov	Valid	Pacaud et al.	Eocene (Bartonian)		A member of the family Ampullinidae.
Palaeoglandina turolensis^[141]	Sp. nov	Valid	Albesa & Neubauer	Miocene (Tortonian) and Pliocene (Zanclean)	Teruel Basin	A member of the family Spiraxidae belonging to the subfamily Euglandininae.
Palazzia omalogyroides	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene		A species of Palazzia.
Palmoliva^[142]	Gen. et comb. nov	Valid	Allmon & Friend	Eocene		A member of the family Ancillariidae. Genus includes "Ancillaria" tenera Conrad and Ancillaria scamba Conrad.
Patagorbitestella leonensis^[143]	Sp. nov	Valid	Di Luca, Griffin & Pastorino	Miocene	Monte León Formation	A member of the family Orbitestellidae.
Peringia tarkhanica	Sp. nov	Valid	Guzhov	Miocene		A species of Peringia.
Pictarene	Gen. et nom. nov	Valid	Pacaud	Paleocene (Danian)		A member of the family Areneidae. The type species is Pictarene faxensis (a replacement name for Delphinula (Pseudoninella) depressa Ravn, 1933).
Pisania klaudiae	Sp. nov	Valid	Kovács & Vicián	Miocene		A species of Pisania.
Pomatiasia	Gen. et comb. nov	Valid	Guzhov	Miocene		A member of the family Hydrobiidae. Genus includes "Amnicola" cyclostomoides Sinzov (1880). Published online in 2023, but the issue date is listed as December 2022.
Ponderia chattica	Sp. nov	Valid	Lozouet	Oligocene		A species of Ponderia.
Probaicalia okurai^[144]	Sp. nov	In press	Isaji	Early Cretaceous (Barremian)	Itsuki Formation
Pseudosimnia javanensis^[145]	Sp. nov	Valid	Celzard & Dovesi	Miocene		A species of Pseudosimnia.
Pseudotorinia grasemanni	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	A species of Pseudotorinia.
Pseudotuba	Gen. et comb. nov	Valid	Harzhauser & Landau	Eocene to Miocene		A member of the family Mathildidae. The type species is Tuba sulcata var. badensis Sacco (1895), raised to the rank of the species P. badensis; genus also includes "Cyclostoma" cancellata Grateloup (1828), "Tuba" pedemontana Sacco (1895), "Turbo" bellardii d'Orbigny (1852), "Littorina" cyclostomoides Deshayes (1861), "Tuba" elatospira Cossmann (1907) and "Turbo" sculptus Sowerby (1823).
Pterynotus poustagnacensis	Sp. nov	Valid	Lozouet	Oligocene		A species of Pterynotus.
Pupisoma (Ptychopatula) schaeferi^[146]	Sp. nov	Valid	Kadolsky	Miocene		A species of Pupisoma.
Purpurellus aquitanicus	Sp. nov	Valid	Lozouet	Oligocene and Miocene		A species of Purpurellus.
Pustulosia^[147]	Gen. et comb. nov	Valid	Harzhauser, Guzhov & Landau	Miocene		A member of the family Batillariidae. The type species is "Cerithium" submitrale Eichwald (1851); genus also includes "Cerithium" hornense Schaffer (1912).
Putzeysia diversii	Sp. nov	Valid	Kiel, Sami & Taviani	Miocene (Langhian to Tortonian)		A Putzeysia.
Pyrgiscus naldonii^[148]	Sp. nov	Valid	Tabanelli et al.	Pliocene		A species of Pyrgiscus.
Pyrgiscus ruggierii	Sp. nov	Valid	Tabanelli et al.	Pliocene		A species of Pyrgiscus.
Ringicula costata chokrakensis^[149]	Ssp. nov	Valid	Guzhov	Miocene		Published online in 2023, but the issue date is listed as December 2022.
Ringicula costata paratethica	Ssp. nov	Valid	Guzhov	Miocene		Published online in 2023, but the issue date is listed as December 2022.
Ringicula guzhovi^[150]	Nom. nov	Valid	Landau, Harzhauser & Malaquias	Miocene		A species of Ringicula; a replacement name for Voluta exilis Eichwald (1829).
Ringicula knolli	Sp. nov		Banerjee & Halder	Eocene	Cambay Shale	A species of Ringicula.
Ringicula subglobosa	Sp. nov	Valid	Guzhov	Miocene		A species of Ringicula. Published online in 2023, but the issue date is listed as December 2022.
Rissoa federicoi^[151]	Nom. nov	Valid	Kovács & Stein	Miocene	Vienna Basin	A species of Rissoa; a replacement name for Rissoia (Turboella) acuticosta Sacco (1895).
Sconsia landaui	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A species of Sconsia.
Setia minutissima	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene		A species of Setia.
Simplexollata	Gen. et sp. et comb. nov	Valid	Harzhauser & Landau	Oligocene to Pleistocene		A member of the family Architectonicidae. The type species is S. anticollata; genus also includes "Solarium" carocollatum Lamarck (1822), "Solarium" simplex Bronn (1831), "Solarium" gratteloupi d'Orbigny (1852), "Solarium" stephanense Cossmann & Peyrot (1919), "Solarium" carocollatosimplex Sacco (1892) and "Architectonica" ariei Wienrich (2007).
Siphoecphora gerrardi	Sp. nov	Valid	Petuch & Berschauer	Miocene	Pungo River Formation
Skeneoides karrineae	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene		A species of Skeneoides.
Solatisonax pozsgayae	Sp. nov	Valid	Kovács, Leél-Őssy & Vicián	Miocene	Pétervására Formation	A species of Solatisonax.
Solatisonax tavianii	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	A species of Solatisonax.
Solatisonax? transversa	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Possibly a species of Solatisonax.
Sorgenfreispira planicostata	Sp. nov	Valid	Landau, Harzhauser & Giannuzzi-Savelli	Pliocene		A species of Sorgenfreispira.
Subepona leahae	Sp. nov	Valid	Squires & Groves	Eocene	Llajas Formation	A species of Subepona.
Sulcoactaeon fallax^[152]	Sp. nov	Valid	Blagovetshenskiy	Early Cretaceous
Sulcoactaeon gerassimovi	Sp. nov	Valid	Blagovetshenskiy	Early Cretaceous
Sulcoactaeon insuetus	Sp. nov	Valid	Blagovetshenskiy	Early Cretaceous
Sulcoactaeon kremenkensis	Sp. nov	Valid	Blagovetshenskiy	Early Cretaceous
Sulcoactaeon polivnensis	Sp. nov	Valid	Blagovetshenskiy	Early Cretaceous
Sulcoactaeon rotundus	Sp. nov	Valid	Blagovetshenskiy	Early Cretaceous
Sulcoactaeon shumilkini	Sp. nov	Valid	Blagovetshenskiy	Early Cretaceous
Sulcoactaeon simbirskensis	Sp. nov	Valid	Blagovetshenskiy	Early Cretaceous
Suluspira gallica	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene		A species of Suluspira.
Tacheocampylaea fornacis^[153]	Sp. nov	Valid	Esu & Girotti	Pleistocene		A species of Tacheocampylaea.
Teiichispira teresae^[154]	Sp. nov	Valid	Bertero, Ferrari & Carrera	Ordovician	San Juan Formation	A member of the family Macluritidae.
Terebra golebiowskii	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	A species of Terebra.
Terebra henkmulderi	Sp. nov	Valid	Landau & Harzhauser	Pliocene (Piacenzian)		A species of Terebra.
Terebra praehistrio	Sp. nov	Valid	Landau & Harzhauser	Pliocene (Piacenzian)		A species of Terebra.
Textiliomurex problematicus	Sp. nov	Valid	Lozouet	Oligocene		A member of the family Muricidae.
Theodisca	Gen. et comb. nov		Harzhauser, Guzhov & Landau	Miocene to Pleistocene		A member of the family Potamididae. The type species is "Cerithium" theodiscum Rolle (1856); genus also includes "Cerithium" cicur Zhizhchenko (1934), "Potamides" biseriatus Friedberg (1914), "Potamides" azerbajdjanicus K. A. Ali-Zade (1940), "Cerithium" graecum Deshayes (1832) and "Cerithium" etruscum Mayer (1864). The generic name is shared with Theodisca Müller (1858).
Timbellus cailloelensis^[155]	Sp. nov	Valid	Ledon et al.	Eocene (Lutetian)		A species of Timbellus.
Timbellus hesdinensis	Sp. nov	Valid	Ledon et al.	Eocene (Lutetian)		A species of Timbellus.
Timbellus wozniaki	Sp. nov	Valid	Ledon et al.	Eocene (Lutetian)		A species of Timbellus.
Toroidia tavianii^[156]	Sp. nov	Valid	Micali & Villari	Plio-Pleistocene
Triphora (sensu lato) freixiensis	Sp. nov	Valid	Landau, Bakker & Marques da Silva	Pliocene	Mondego Basin	A member of the family Triphoridae.
Trisecphora governorensis	Sp. nov	Valid	Petuch & Berschauer	Miocene	Calvert Formation	A species of Trisecphora.
Trisecphora precursor	Sp. nov	Valid	Petuch & Berschauer	Miocene	Pungo River Formation	A species of Trisecphora.
Trisecphora (Recurvecphora) recurvicostata	Sp. nov	Valid	Petuch & Berschauer	Miocene	Pungo River Formation	A species of Trisecphora.
Tritia bagolyensis	Sp. nov	Valid	Kovács & Vicián	Miocene		A species of Tritia.
Tritia domonkosi	Sp. nov	Valid	Kovács & Vicián	Miocene		A species of Tritia.
Tritia gerdsteini	Sp. nov	Valid	Kovács & Vicián	Miocene		A species of Tritia.
Tritia letkesensis	Sp. nov	Valid	Kovács & Vicián	Miocene		A species of Tritia.
Trubatsa larratensis	Sp. nov	Valid	Lozouet	Oligocene		A species of Trubatsa.
Trubatsa subaturensis	Sp. nov	Valid	Lozouet	Oligocene		A species of Trubatsa.
Trubatsa trounensis	Sp. nov	Valid	Lozouet	Oligocene		A species of Trubatsa.
Turbonilla landii	Sp. nov	Valid	Tabanelli et al.	Pliocene		A species of Turbonilla.
Turbonilla peculiaris	Sp. nov	Valid	Tabanelli et al.	Pliocene		A species of Turbonilla.
Turbonilla zangherii	Sp. nov	Valid	Tabanelli et al.	Pliocene		A species of Turbonilla.
Turritellinella devinensis^[157]	Sp. nov	Valid	Biskupič	Miocene	Studienka Formation	A member of the family Turritellidae.
Umbilia tomdarraghi^[158]	Sp. nov	Valid	Southgate & Militz	Pliocene		A species of Umbilia.
Vermicularia katiae^[159]	Sp. nov	Valid	Anderson & Allmon	Miocene–Pliocene		A species of Vermicularia. Published online in 2024, but the issue date is listed as December 2023.
Vexiguraleus iberoangulatus	Sp. nov	Valid	Landau, Harzhauser & Giannuzzi-Savelli	Pliocene		A member of the family Mangeliidae.
Xamaycarene	Gen. et comb. nov	Valid	Pacaud	Late Cretaceous (Maastrichtian)	Shaw Castle Shale	A member of the family Areneidae. The type species is "Arene" truncatosphaera Sohl (1998).
Xestopyrguloides ? sagitta	Sp. nov	Valid	Neubauer & Wesselingh	Pleistocene (Gelasian)	Kolankaya Formation	A member of the family Hydrobiidae.
Zafrona olgapirosae	Sp. nov	Valid	Kovács & Vicián	Miocene		A species of Zafrona.

Gastropod research

Review of the world-wide fossil record and evolutionary history of freshwater gastropods is published by Neubauer (2023).^[160]
A study on the biogeographic distributions of pleurotomariids throughout their evolutionary history from Maastrichtian to Holocene is published by Bose, Das & Mondal (2023).^[161]
A study on the diversity of potamidids and batillariids in the Paratethys through time is published by Harzhauser et al. (2023), who interpret the studied groups as a whole not to be mangrove indicators, and find only members of the genera Mesohalina, Ptychopotamides, Terebralia and probably Tiarapirenella to be associated with mangroves during the Oligocene to early Middle Miocene in the Central Paratethys, while other members of the studied groups adapted to environments devoid of mangroves.^[162]
Revision and study on the affinities of the Plio-Pleistocene turritellids from the Atlantic Coastal Plain and Florida is published by Friend et al. (2023).^[163]

Other molluscs

Name	Novelty	Status	Authors	Age	Type locality	Notes
Agidelia^[164]	Gen. et sp. nov		Mazaev	Permian		A member of Rostroconchia belonging to the family Bransoniidae. Genus includes new species A. magnifica. Published online in 2024, but the issue date is listed as December 2023.
Arceodomus fredericksi^[165]	Sp. nov	Valid	Mazaev	Permian		A member of Rostroconchia. Published online in 2024, but the issue date is listed as December 2023.
Ashaconcha	Gen. et sp. nov		Mazaev	Permian		A member of Rostroconchia belonging to the family Bransoniidae. Genus includes new species A. rara. Published online in 2024, but the issue date is listed as December 2023.
Celtopileus^[166]	Gen. et sp. nov	Valid	Cope & Ebbestad	Ordovician (Floian)	Ogof Hen Formation	A member of Tergomya belonging to the group Kirengellida and possibly to the family Hypseloconidae. The type species is C. calvapex.
Costulaconus	Gen. et sp. nov	Valid	Cope & Ebbestad	Ordovician (Floian)	Ogof Hen Formation	A member of Tergomya belonging to the group Kirengellida and possibly to the family Hypseloconidae. The type species is C. mirificus.
Eotebenna danica^[167]	Sp. nov	Valid	Peel & Berg-Madsen	Cambrian (Drumian and Guzhangian)	Andrarum Limestone	A member of Helcionelloida belonging to the family Yochelcionellidae.
Hensoniconus^[168]	Gen. et comb. nov	Valid	Peel	Cambrian (Wuliuan)	Henson Gletscher Formation	A member of Helcionelloida. The type species is Scenella? siku Peel & Kouchinsky (2022).
Hoarepora uralica	Sp. nov		Mazaev	Permian		A member of Rostroconchia belonging to the family Bransoniidae. Published online in 2024, but the issue date is listed as December 2023.
Incisiochiton pustulifer^[169]	Sp. nov	Valid	Sirenko & Dell'Angelo	Paleocene	Luzanovka Beds	A chiton belonging to the family Schizochitonidae.
Proplina areniga	Sp. nov	Valid	Cope & Ebbestad	Ordovician (Floian)	Ogof Hen Formation	A member of Tergomya belonging to the group Tryblidiida and to the family Proplinidae.
Proplina? obtusa	Sp. nov	Valid	Cope & Ebbestad	Ordovician (Floian)	Ogof Hen Formation	A member of Tergomya belonging to the group Tryblidiida and to the family Proplinidae.

Other mollusc research

Qiang et al. (2023) describe new fossil material of Anabarella plana from the Cambrian Yanjiahe Formation (China), and consider A. plana to be the only member of the genus Anabarella definitely present in South China.^[170]

General research

Slater (2023) describes microscopic molluscan radulae from the Cambrian (Wuliuan) Borgholm Formation (Sweden), similar to the radulae of extant gastropods specialized for piercing and sucking the tissues of green algae, and interpret this finding as indicating that this form of herbivory was already present among Cambrian molluscs.^[171]
Fossil material representing the first evidence of gastropod drilling predation on molluscan prey from Coniacian is reported from the Anaipadi Member of the Garudamangalam Formation (India) by Mukhopadhyay et al. (2023).^[172]
A diverse molluscan assemblage dominated by turritellid gastropods from Kachchh (India), originally interpreted as Late Jurassic in age, is reinterpreted as more likely Miocene in age by Fürsich et al. (2023).^[173]

Notes and References

Korn . D. . Weyer . D. . The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany) . 2023 . European Journal of Taxonomy . 882 . 1–230 . 10.5852/ejt.2023.882.2177 . 260045030 .
Zohara Malti . F. . Nemyrovska . T. I. . Ameur . M. . Korn . D. . Lithostratigraphy, conodont and ammonoid stratigraphy of the Hassi Sguilma Formation (Early Carboniferous; Saoura Valley, Algeria) . 2023 . Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen . 307 . 2 . 155–199 . 10.1127/njgpa/2023/1121 . 257570542 .
Frau . C. . Fuhr . M. . Arpavoniceras buloti gen. et sp. nov.; a new lower Hauterivian heteromorphic ammonoid from southern France and its place in the evolution of Cretaceous ammonites . 2023 . Cretaceous Research . 151 . 105628 . 10.1016/j.cretres.2023.105628 . 2023CrRes.15105628F . 259685143 .
Zaitsev . B. A. . Ippolitov . A. P. . Early Jurassic (Sinemurian) Ammonoids from the Boulders of the Greek Quarry, Central Crimea . 2023 . Stratigraphy and Geological Correlation . 31 . 4 . 221–274 . 10.1134/S0869593823040068 . 2023SGC....31..221Z . 259848128 .
Söte . T. . Becker . R. T. . Upper Frasnian ammonoids (Tornoceratidae) from Büdesheim (Eifel Mountains, Rhenish Massif, Germany) . 2022 . Palaeontographica Abteilung A . 325 . 1–6 . 1–67 . 10.1127/pala/2022/0136 . 254960117 .
Marin . L. S. . Aguirre-Urreta . B. . Rawson . P. F. . 2023 . Lower Cretaceous ammonoids from the Neuquén Basin, Argentina: The late Hauterivian Paraspiticeras and associated faunas . Cretaceous Research . 145 . 105478 . 10.1016/j.cretres.2023.105478 . 2023CrRes.14505478M . 256382214 .
Work . D. M. . Mason . C. E. . Mississippian (early Late Tournaisian; early Osagean) ammonoids from the Nancy Member of the Borden Formation, northeastern Kentucky . 2023 . Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen . 308 . 2 . 113–150 . 10.1127/njgpa/2023/1133 . 259459358 .
Poulton . T. P. . Corbinites (Subfamily Lithacoceratinae), a new genus for the giant western Canadian Late Kimmeridgian or Tithonian (Late Jurassic) ammonite Titanites occidentalis Frebold . 2023 . Volumina Jurassica . 21 . 27–38 . 10.7306/VJ.21.3 .
Joly . B. . Parent . H. . Garrido . A. C. . Aalenian phylloceratid ammonites from Picún Leufú, Neuquén Basin, Argentina . 2023 . Revue de Paléobiologie, Genève . 42 . 1 . 143–148 . 10.5281/zenodo.7446073 .
Marchesi . R. . Balini . M. . Jenks . J. F. . Early Carnian ammonoids from China Mountain (Tobin Range, Nevada, USA) . 2022 . Palaeontographica Abteilung A . 325 . 1–6 . 69–109 . 10.1127/pala/2022/0130 . 251449748 .
Mitta . V. V. . 2023 . On the Garantianinae (Ammonoidea: Stephanoceratidae) from the Upper Bajocian of the Kuban River Basin (Northern Caucasus, Russia) . Paleontological Journal . 57 . 4 . 392–400 . 10.1134/S0031030123040081 . 2023PalJ...57..392M . 261103502 .
Dietze . V. . Hostettler . B. . Rare ammonites from the Upper Aalenian/Lower Bajocian transition (Middle Jurassic) from the area around Moutier (Faltenjura, Switzerland) . 2023 . Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen . 309 . 1 . 77–91 . 10.1127/njgpa/2023/1150 . 260658186 .
Thongterm . K. . Shigeta . Y. . Sardsud . A. . Asato . K. . Maekawa . T. . Haga . T. . Agematsu . S. . Sashida . K. . 2023 . Olenekian (Early Triassic) ammonoids and conodonts from southern Thailand . National Museum of Nature and Science Monographs . 54 . 1–171 .
Latil . J.-L. . Jaillard . E. . Taxonomy, phylogeny and biostratigraphy of the upper Aptian–lower Albian ammonites of the Chott area, southern Central Tunisia . 2023 . Cretaceous Research . 154 . 105731 . 10.1016/j.cretres.2023.105731 . 263727960 .
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