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 NameNoveltyStatusAuthorsAgeType localityLocationNotesImagesAcutimitoceras paracutumSp. novValidKorn & WeyerCarboniferous (Tournaisian)Hangenberg LimestoneA member of the family Prionoceratidae belonging to the subfamily Acutimitoceratinae.Acutimitoceras ucatumSp. novValidKorn & WeyerCarboniferous (Tournaisian)Hangenberg LimestoneA member of the family Prionoceratidae belonging to the subfamily Acutimitoceratinae.Ammonellipsites infirmusSp. novValidKorn in Zohara Malti et al.Carboniferous (Tournaisian)Hassi Sguilma FormationArpavonicerasGen. et sp. et comb. novFrau & FuhrEarly Cretaceous (Hauterivian)A member of the family Neocomitidae. The type species is A. buloti; genus also includes "Shasticrioceras" anglicum Doyle (1963).Asteroceras dommerguesiSp. novValidZaitsev & IppolitovEarly Jurassic (Sinemurian)CrimeaAulatornoceras beyrichiSp. novValidSöte & BeckerDevonian (Frasnian)Büdesheim FormationA member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.AustralopseudothurmanniaGen. et sp. novMarin, Aguirre-Urreta & RawsonEarly Cretaceous (Hauterivian)Genus includes new species A. flexuosa.Becanites rowanensisSp. novValidWork & MasonCarboniferous (Tournaisian)Borden Formation()Bollandoceras antecedensSp. novValidKorn in Zohara Malti et al.Carboniferous (Tournaisian)Hassi Sguilma FormationBuedesheimitesGen. 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.CorbinitesGen. et comb. novValidPoultonLate JurassicA member of the family Ataxioceratidae belonging to the subfamily Lithacoceratinae. The type species is "Titanites" occidentalis Frebold (1957).Costiphylloceras limayenseSp. novValidJoly, Parent & GarridoMiddle Jurassic (Aalenian)Los Molles FormationA member of the family Phylloceratidae.Crassotornoceras tenueSp. novValidSöte & BeckerDevonian (Frasnian)Büdesheim FormationA member of the family Tornoceratidae. Announced in 2022; the final article version was published in 2023.CryptomorphicerasGen. 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.Djanaliparkinsonia egoriSp. novValidMittaMiddle Jurassic (Bajocian)()A member of the family Stephanoceratidae.Emileites christophiSp. novValidDietze & HostettlerMiddle JurassicPasswang FormationEocanites delicatusSp. novValidKorn & WeyerCarboniferous (Tournaisian)Hangenberg LimestoneA member of the family Prolecanitidae belonging to the subfamily Prolecanitinae.Gattendorfia bellaSp. novValidKorn & WeyerCarboniferous (Tournaisian)Hangenberg LimestoneA member of the family Gattendorfiidae.Gattendorfia corpulentaSp. novValidKorn & WeyerCarboniferous (Tournaisian)Hangenberg LimestoneA member of the family Gattendorfiidae.Gattendorfia immodicaSp. novValidKorn & WeyerCarboniferous (Tournaisian)Hangenberg LimestoneA member of the family Gattendorfiidae.Gattendorfia rhenanaSp. novValidKorn & WeyerCarboniferous (Tournaisian)Hangenberg LimestoneA member of the family Gattendorfiidae.Gattendorfia schmidtiSp. novValidKorn & WeyerCarboniferous (Tournaisian)Hangenberg LimestoneA member of the family Gattendorfiidae.Gattendorfia valdevolutaSp. novValidKorn & WeyerCarboniferous (Tournaisian)Hangenberg LimestoneA member of the family Gattendorfiidae.Hammatocyclus rugosusSp. novValidKorn in Zohara Malti et al.Carboniferous (Tournaisian)Hassi Sguilma FormationHasselbachia erroneaSp. novValidKorn & WeyerCarboniferous (Tournaisian)Hangenberg LimestoneA member of the family Gattendorfiidae belonging to the subfamily Gattendorfiinae.Idahocolumbites phatthalungensisSp. nov.ValidThongterm & Shigeta in Thongterm et al.Triassic