This list of fossil molluscs described in 2022 is a list of new taxa of fossil molluscs that were described during the year 2022, as well as other significant discoveries and events related to molluscan paleontology that occurred in 2022.
Ammonites
New taxa NameNoveltyStatusAuthorsAgeType localityLocationNotesImagesAcanthohoplites albedocostatusSp. novIn pressMatsukawaEarly CretaceousAcantholytoceras costaevariavilisSp. novIn pressMatsukawaEarly CretaceousAulatornoceras beyrichiSp. novValidSöte & BeckerDevonian (Frasnian)Büdesheim FormationA member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.BuedesheimitesGen. et sp. novValidSöte & BeckerDevonian (Frasnian)Büdesheim FormationA member of the family Tornoceratidae. Genus includes new species B. housei. Announced in 2022; the final article version was published in 2023.Cadoceras (Catacadoceras) imlayiSp. novValidKiselevMiddle Jurassic (Callovian)Chinitna Formation()Cadoceras kniazeviSp. novValidKiselevMiddle Jurassic (Callovian)Cadoceras (Paracadoceras) pseudofrearsiSp. novValidKiselevMiddle Jurassic (Callovian)Cadomites zelenchukensisSp. novValidMittaMiddle Jurassic (Bathonian)()Collignoniceras rhodanicumSp. novValidAmédro, Baudouin & Delanoy in Amédro et al.Late Cretaceous (Turonian)Crassotornoceras tenueSp. novValidSöte & BeckerDevonian (Frasnian)Büdesheim FormationA member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.Crioceratites tepehuaensisSp. novValidEsquivel-Macías et al.Early CretaceousCryptomorphicerasGen. et comb. et 2 sp. novValidMarchesi, Balini & JenksLate 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.Dactylioceras kopikiSp. novValidRogov in Rogov & LutikovEarly Jurassic (Toarcian)() ? ()A member of the family Dactylioceratidae.Diplesioceras fischeriSp. novValidDietze, Schweigert & ChandlerMiddle Jurassic (Bajocian)Oolithe de Bayeux FormationEgoianites jaubertiSp. novValidDelanoy et al.Early Cretaceous (Barremian)A member of the family Heteroceratidae.Epitornoceras transmediterraneumSp. novValidKorn & BockwinkelDevonian (Givetian)A member of the family Tornoceratidae.Forresteria (Harleites) seidliSp. novValidSummesberger et al.Late Cretaceous (Santonian)Gosau Group(Streiteck Formation)Heteroceras arnaudiSp. novValidDelanoy et al.Early Cretaceous (Barremian)A member of the family Heteroceratidae.Heteroceras munierchalmasiSp. novValidDelanoy et al.Early Cretaceous (Barremian)A member of the family Heteroceratidae.Heteroceras penageiSp. novValidDelanoy et al.Early Cretaceous (Barremian)A member of the family Heteroceratidae.Hildoceras appenninicusSp. novValidRidenteEarly Jurassic (Toarcian)Kepplerites (Gowericeras) coperniciSp. novValidMönnig & DietlMiddle Jurassic (Callovian)Kepplerites (Gowericeras) halleyiSp. novValidMönnig & DietlMiddle Jurassic (Callovian)()Kepplerites (Toricellites) besseliSp. novValidMönnig & DietlMiddle Jurassic (Callovian)Kutatissites sudaiSp. novIn pressMatsukawaEarly CretaceousLentitornocerasGen. et sp. novValidKorn & BockwinkelDevonian (Givetian)Red Ironstone FormationA member of the family Tornoceratidae. The type species is L. materni.Linguatornoceras acutilobatumSp. novValidSöte & BeckerDevonian (Frasnian)Büdesheim FormationA member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.Linguatornoceras sandenseSp. novValidSöte & BeckerDevonian (Frasnian)Büdesheim FormationA member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.Lissoceras kubanenseSp. novValidMittaMiddle Jurassic (Bajocian)()Lissoceras paviaiSp. novValidMittaMiddle Jurassic (Bajocian)()Megatyloceras leteilensisSp. novValidDelanoy et al.Early Cretaceous (Aptian)A member of the family Douvilleiceratidae.Nejdia arabicaSp. novValidGelinEarly Jurassic (Toarcian)Marrat FormationParacrochordiceras watanabeiSp. novValidEhiroMiddle Triassic (Anisian)Fukkoshi FormationA member of the family Acrochordiceratidae.Paradanubites ozashienseSp. novValidEhiroMiddle Triassic (Anisian)Fukkoshi FormationA member of Danubitoidea belonging to the family Danubitidae.Parahedenstroemia? tatjanaeSp. novValidĐaković, Krystyn & SudarEarly Triassic?A member of the family Hedenstroemiidae.Parapopanoceras involutumSp. novValidEhiroMiddle Triassic (Anisian)Fukkoshi FormationA member of Ceratitida belonging to the group Megaphyllitoidea and the family Parapopanoceratidae.PaucitornocerasGen. et comb. novValidKorn & BockwinkelDevonianRed Ironstone Formation()A member of the family Tornoceratidae. The type species is "Goniatites" paucistriatus d`Archiac & de Verneuil (1842); genus also includes "Tornoceras" rhysum Clarke (1898).Ponticeras materniSp. novValidKorn & BockwinkelDevonian (Givetian)Red Ironstone FormationA member of Agoniatitida belonging to the group Gephuroceratina and the family Ponticeratidae.Procheloniceras yajimaiSp. novIn pressMatsukawaEarly CretaceousPseudocrioceras maziereiSp. novValidFrau & DelanoyEarly Cretaceous (Barremian/Aptian transition)Pseudoleymeriella obataiSp. novValidMatsukawa & OjiEarly Cretaceous (Aptian)Miyako GroupA member of Ancyloceratina belonging to the family Trochleiceratidae.Pseudosaynella pacificaSp. novIn pressMatsukawaEarly CretaceousPsilokhvalynitesGen. et sp. novValidEhiroMiddle Triassic (Anisian)Fukkoshi FormationA member of Dinaritoidea belonging to the family Khvalynitidae. The type species is P. takaizumii.Shasticrioceras nakazawaiSp. novIn pressMatsukawaEarly CretaceousSigaloceras (Gulielmina) fabriciusSp. novValidMönnig & DietlMiddle Jurassic (Callovian)Tornoceras incisumSp. novValidSöte & BeckerDevonian (Frasnian)Büdesheim FormationA member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.Tornoceras ventrovaricatumSp. novValidSöte & BeckerDevonian (Frasnian)Büdesheim FormationA member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.Witchellia companyiSp. novValidSandovalMiddle Jurassic (Bajocian)A member of the family Sonniniidae.Witchellia striataSp. novValidSandovalMiddle Jurassic (Bajocian)A member of the family Sonniniidae.
Ammonite research Mironenko & Naugolnykh (2022) describe a collection of cephalopod jaws from the Permian (Artinskian) Divjinskian Formation (Sverdlovsk Oblast, Russia), interpreted as likely fossil material of goniatitid ammonites belonging to the genus Uraloceras, and infer from the anatomy of the studied jaws that representatives of the genus Uraloceras were likely active predators. A study on the morphological change through ontogeny of beyrichitine ammonites from the Anisian of Nevada is published by Bischof, Schlüter & Lehmann (2022). A study aiming to determine whether the environmental changes around the Triassic–Jurassic boundary influenced development of septal thickness in ammonites, as well aiming to determine the relation between septal thickness and paleolatitudinal occurrences, and whether ontogenetic septal thickness-trajectories reflected paleogeographic origin or phylogenetic relationships of ammonites, is published by Weber et al. (2022). A study on the hydrodynamic properties of shells of Late Triassic and Early Jurassic ammonites is published by Hebdon et al. (2022). A study on the functional morphology of ammonites from the Middle Triassic to the Early Jurassic, reevaluating possible causes of an overall shift of ammonite shell forms during the studied periods, is published by Hebdon et al. (2022), who interpret their findings as indicating that the trade-offs between coasting efficiency, volume accretion per unit surface area accreted and diameter accretion per unit of surface area (three factors proposed as explanations of the shift of shell forms) were identical in the Triassic and in the Jurassic. Jaws of ammonites belonging to the Boreal family Polyptychitidae, with lower jaws closely resembling jaws of craspeditids, cardioceratids and hoplitoids, are described for the first time from the Valanginian of Russia by Mironenko & Mitta (2022). A study on changes of septal spacing between succeeding chambers of the shell of Gaudryceras tenuiliratum during its ontogeny is published by Kawakami, Uchiyama & Wani (2022). A study on the impact of the conch shape on ammonite locomotion, based on data obtained from tests of 3D-printed, biomimetic robots representing the oxycone morphology (based on Sphenodiscus lobatus and S. lenticularis), the serpenticone morphology (based on Dactylioceras commune), the sphaerocone morphology (based on Goniatites crenistria) and the morphospace center, is published by Peterman & Ritterbush (2022).
Other cephalopods
New taxa