2026 in paleomalacology

This list records new taxa of fossil molluscs that were announced or described in 2026. Other peer-reviewed publications on discoveries related to paleomalacology which occurred in that year are also detailed here.

Ammonites

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Ainoceras boomerangense^[1]	Sp. nov		Whittingham et al.	Late Cretaceous (Santonian)	Haslam Formation	Canada ( British Columbia)	A member of the family Nostoceratidae.
Amapondella separoannulum^[1]	Sp. nov		Whittingham et al.	Late Cretaceous (Campanian)	Haslam Formation	Canada ( British Columbia)	A member of the family Nostoceratidae.
Ammonitoceras chalense^[2]	Sp. nov		Lehmann & Bayliss	Early Cretaceous	Ferruginous Sands	United Kingdom
Ammonitoceras ochtrupense^[2]	Sp. nov		Lehmann & Bayliss	Early Cretaceous	Peine Formation	Germany
Australiceras dubium^[2]	Sp. nov		Lehmann & Bayliss	Early Cretaceous	Ferruginous Sands	United Kingdom
Australiceras simpsoni^[2]	Sp. nov		Lehmann & Bayliss	Early Cretaceous	Ferruginous Sands	United Kingdom
Ceresioceltites^[3]	Gen. et comb. nov	Valid	Pieroni & Balini	Middle Triassic		Italy Switzerland	A member of the family Danubitidae. The type species is "Ammonites" fumagallii Stabile (1860); genus also includes "Celtites" paronai Airaghi (1912) and "Celtites" taramellii Airaghi (1912).
Eckhardites atmensis^[4]	Sp. nov	Valid	Mitta in Mitta, Zenina & Meleshin	Middle Jurassic (Bathonian)		Russia	A member of the family Cardioceratidae. Published online in 2026, but the issue date is listed as December 2025.
Embreeoceras^[1]	Gen. et sp. nov		Whittingham et al.	Late Cretaceous (Santonian)	Trent River Formation	Canada ( British Columbia)	A member of the family Nostoceratidae. The type species is E. retexum.
Fissilobiceras franzi^[5]	Sp. nov	Valid	Dietze, Auer & Schweigert	Middle Jurassic	Wedelsandstein Formation	Germany	A member of the family Hammatoceratidae.
Flexoptychites gottardoi^[3]	Sp. nov	Valid	Pieroni & Balini	Middle Triassic (Anisian)		Italy	A member of the family Ptychitidae.
Graefenbergites ingae^[6]	Sp. nov	Valid	Wierzbowski	Late Jurassic (Kimmeridgian)		Poland	A member of the family Perisphinctidae.
Heterocarinella^[7]	Gen. et sp. nov	Valid	Aiba	Late Cretaceous (Santonian)		Japan	A member of the family Turrilitidae. The type species is H. japonica.
Leonardia^[8]	Gen. et sp. et comb. nov		Parent & Garrido	Jurassic-Cretaceous transition	Vaca Muerta	Argentina	A member of the family Himalayitidae. The type species is L. almanzaensis; genus also includes "Berriasella" steinmanni Krantz (1926). The generic name is shared with Leonardia Canefri (1890) and Leonardia Mearns (1905).
Limusoceras^[1]	Gen. et comb. et 2 sp. nov		Whittingham et al.	Late Cretaceous (Turonian to Campanian)		Canada ( British Columbia) Japan Russia ( Sakhalin Oblast) United States ( Alaska)	A member of the family Nostoceratidae. The type species is "Heteroceras" japonicum Yabe (1904) (the species was also designated as the type species of the genus Ebisuites by Cooper (2024),^[9] but Whittingham et al. (2026) do not consider this genus to be valid); genus also includes new species L. neojaponicum and L. traski.
Parapopanoceras izosovi^[10]	Sp. nov	Valid	Zakharov et al.	Middle Triassic		Russia ( Primorsky Krai)
Parasianites^[11]	Gen. et comb. nov	Valid	Leonova	Permian		United States ( Texas)	A member of the family Paragastrioceratidae. The type species is "Stenolobulites" admiralensis (Plummer & Scott, 1937); genus also includes "Stenolobulites" subglobosus Mikesh, Glenister & Furnish (1988).
Pseudosvetlanoceras^[11]	Gen. et comb. nov	Valid	Leonova	Permian	Lenox Hills Formation	United States ( Texas)	A member of the family Paragastrioceratidae; a new genus for "Svetlanoceras" moylei Mikesh (1990).
Quintucoceras^[12]	Gen. et 3 sp. et comb. nov	Valid	Parent & Garrido	Early Cretaceous (Valanginian)	Quintuco Formation	Argentina	A member of the family Neocomitidae. The type species is Q. macrospinatum; genus also includes new species Q. pseudowichmanni and Q. denticulatum, as well as "Necomites" wichmanni Leanza (1945).
Rasaites^[3]	Gen. et sp. nov	Valid	Pieroni & Balini	Middle Triassic (Anisian)		Italy	A possible member of the family Hungaritidae. The type species is R. rasaensis.
Stacheoceras resaensis^[13]	Sp. nov		Sun & Dai in Sun et al.	Permian (Wuchiapingian)		China	A member of the family Vidrioceratidae.
Subjaponites^[10]	Gen. et comb. nov	Valid	Zakharov et al.	Middle Triassic		Russia ( Primorsky Krai)	A member of Pinacoceratoidea belonging to the family Japonitidae. Genus includes "Japonites" russkiensis Zakharov (1968).
Subthurmannia pacifica^[12]	Sp. nov	Valid	Parent & Garrido	Early Cretaceous (Valanginian)	Quintuco Formation	Argentina	A member of the family Neocomitidae.
Yakutosirenites (Mulanites) mulanae^[14]	Sp. nov	Valid	Zheng et al.	Late Triassic (Carnian)	Xiaowa Formation	China

Ammonite research

Evidence indicating that, in spite of drops in taxonomic diversity, the morphological complexity of ammonoid shells did not decline during Early Triassic biotic crises is presented by Miao et al. (2026).^[15]
Two ammonite shells with large, elongated projections near their apertures are described from the Lower Triassic strata in the Paris area (Idaho, United States) by Brayard et al. (2026).^[16]
Neige & van Tiel (2026) study the evolutionary history of the family Dactylioceratidae, and interpret the pattern of changes of their taxonomic and morphological diversity as consistent with background extinction, possibly linked to species specialization making them vulnerable to such extinction.^[17]
Schweigert (2026) reports the discovery of a specimen of Chanasia cf. buckmani from the Callovian strata from Prahecq near Niort (France) with morphological similarities to co-occurring Phlycticeras, interpreted as a possible case of zoomimesis.^[18]
Jattiot & Boursicot (2026) describe fossil material of immature haploceratoid ammonites from the Callovian strata from the Montreuil-Bellay locality (France) distinct from known ammonites and possibly representing a population of Taramelliceras taurimontanum with genetically-induced abnormalities.^[19]
A study on the composition of the Late Jurassic (Kimmeridgian) ammonite faunas of the subtilicaelatum and desmoides biohorizons of the Lacunosamergel Formation (Germany) is published by Jantschke et al. (2026).^[20]
Aguirre-Urreta et al. (2026) report evidence of exceptional preservation of the periostracum in specimens of Bochianites neocomiensis and Lissonia riveroi from Vaca Muerta (Argentina), interpreted as indicative of highly conservative composition of the periostracum throughout the evolutionary history of conchiferan molluscs.^[21]
Frau (2026) revises the affinities of the genera Vergunniceras and Paracheloniceras, and names a new subfamily Paracheloniceratinae within the family Douvilleiceratidae.^[22]
A study on the biostratigraphy of the Barremian-Aptian ammonite fossils from the southern edge of the Vercors Urgonian platform (France) is published by Pictet, Ferry & Pietra (2026).^[23]
Kennedy & Klinger (2026) revise the species referred to the subgenus Pervinquieria (Styphloceras), reinterpreting them all as a single variable species Pervinquieria (Pervinquieria) nodosocostata.^[24]
Nakagawa et al. (2026) report evidence of differences of oxygen and carbon isotopic values in septa and simultaneously formed outer shells of Early Cretaceous (Albian) ammonites from Madagascar, and argue that oxygen isotopic values in ammonite and other cephalopod septa might not reliably reflect seawater temperatures.^[25]
Hefny et al. (2026) revise the composition of Cenomanian and Turonian ammonite assemblages from the strata of the Galala and Umm Omeiyid formations at Wadi Qena (Egypt).^[26]
Bensekhria et al. (2026) study the biostratigraphy of the Albian–Turonian ammonite fossils from the Aurès Basin (Algeria) and compare the composition of the studied ammonite assemblages with those from Tunisia, Western Europe and the Western Interior Seaway, reporting evidence of differences that were likely driven by climatic gradients, marine barriers and variable migration pathways.^[27]
Evidence of morphological differences of members of the genus Gunnarites from distinct locations within the James Ross Basin (Antarctica) is presented by Mohr et al. (2026).^[28]

Other cephalopods

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Caneycycloceras fuerstenbergorum^[29]	Sp. nov	Valid	Korn & Aubrechtová	Carboniferous		Germany	A member of Orthoceratida belonging to the family Brachycycloceratidae.
Caneycycloceras rotersorum^[29]	Sp. nov	Valid	Korn & Aubrechtová	Carboniferous		Germany	A member of Orthoceratida belonging to the family Brachycycloceratidae.
Discoceras alienum^[30]	Sp. nov	Valid	Aubrechtová, Korn & Kröger	Ordovician (Katian)		Germany
Discoceras angustum^[30]	Sp. nov	Valid	Aubrechtová, Korn & Kröger	Ordovician (Sandbian or Katian)		Estonia
Discoceras aseriense^[30]	Sp. nov	Valid	Aubrechtová, Korn & Kröger	Ordovician (Darriwilian)		Estonia
Discoceras brandenburgense^[30]	Sp. nov	Valid	Aubrechtová, Korn & Kröger	Ordovician (Katian)		Germany
Discoceras circulare^[30]	Sp. nov	Valid	Aubrechtová, Korn & Kröger	Ordovician (Sandbian)		Estonia Germany
Discoceras polonicum^[30]	Sp. nov	Valid	Aubrechtová, Korn & Kröger	Ordovician (Katian)		Poland
Discoceras sovaki^[30]	Sp. nov	Valid	Aubrechtová, Korn & Kröger	Ordovician (Katian)		Germany
Eoceras^[31]	Gen. et sp. nov	Valid	Song et al.	Cambrian Stage 3	Shuijingtuo Formation	China	An early siphuncle-bearing cephalopod. Genus includes new species E. shaanxiense.
Fringillorostrus^[32]	Gen. et sp. nov		Ikegami et al.	Late Cretaceous (Maastrichtian)	Fox Hills Formation	United States ( South Dakota)	A squid belonging to the group Oegopsida and the family Paleothysanoteuthidae. The type species is F. simplex.
Lagonibelus pseudonecopinus^[33]	Sp. nov	Valid	Efremenko in Dzyuba et al.	Early Cretaceous		Russia	A belemnite belonging to the family Cylindroteuthidae.
Rhenocycloceras^[29]	Gen. et comb. et 4 sp. nov	Valid	Korn & Aubrechtová	Carboniferous		Germany Ireland Kyrgyzstan Morocco	A member of Orthoceratida belonging to the family Brachycycloceratidae. The type species is "Orthoceratites" scalaris d'Archiac & de Verneuil (1842); genus also includes "Orthoceras" randolphensis Worthen (1882), "Cycloceras" meeki Elias (1958), "Orthocera" undata Fleming (1815), "Brachycycloceras" mirabile Shimansky (1968) and "Brachycycloceras" subquadratum Shimansky (1968), as well as new species R. conicum, R. denckmanni, R. macdiarmadai and R. africanum.
Scuthoteuthis concavus^[32]	Sp. nov		Ikegami et al.	Late Cretaceous (Maastrichtian)	Fox Hills Formation	United States ( South Dakota)	A squid belonging to the group Oegopsida and the family Scuthoteuthidae.
Uluciala^[34]	Gen. et sp. nov	Valid	Sugiura et al.	Late Cretaceous (Campanian-Maastrichtian)		United States ( South Dakota)	A member of Decabrachia of uncertain affinities, with a morphology intermediate between those of members of Sepiida and Sepiolida. The type species is U. rotundata.
Voroneceras^[35]	Gen. et sp. nov	Valid	Shchedukhin	Devonian (Famennian)		Russia ( Lipetsk Oblast)	A member of the family Westonoceratidae. Genus includes new species V. rai.

Other cephalopod research

Evidence of impact of distribution of mineral deposits in chambered shells on buoyancy and maneuverability of orthocone cephalopods is presented by Peterman, Landman & Ciampaglio (2026).^[36]
Galácz (2026) interprets Bayanoteuthis rugifer as an Eocene belemnite.^[37]
A study on the early ontogenetic development of shells of members of the genus Boionautilus is published by Turek & Manda (2026), who place the studied genus in the family Lechritrochoceratidae, and transfer "Nautilus" sternbergi to the genus Cumingsoceras.^[38]
Evidence of nautiloid affinities of Pohlsepia mazonensis is provided by Clements et al. (2026), who interpret the studied species as a junior synonym of Paleocadmus pohli.^[39]
Fossils of members of the genus Cenoceras otherwise known from the Aalenian–Bajocian strata from Western Europe are described from the Bathonian strata from the Gnaszyn clay-pit (Poland) by Jain, Salamon & Bălc (2026), extending known geographical and stratigraphical range of the studied nautilids.^[40]
Patarroyo et al. (2026) describe new fossil material of Aturia peruviana from the Paleogene strata of the San Jacinto Formation (Colombia), and interpret their morphology as supporting the classification of Aturia colombiana as a junior synonym of A. peruviana.^[41]
Evidence from the study of extant nautiloid cephalopods and from the study of oxygen isotope shell thermometry of nautiloid fossils, indicating that modern nautiloids live deeper and grow in colder water than any of their extinct relatives other than members of the genus Aturia, is presented by Ward et al. (2026).^[42]
New pseudorthocerid and aulacocerid fossil material is described from the Middle Triassic (Anisian) strata of the Rifu Formation (Japan) by Niko & Ehiro (2026).^[43]
Sealey & Lucas (2026) revise the fossil record of Cretaceous ammonites and nautiloids from New Mexico (United States).^[44]
Evidence from the study of fossil material of Nanaimoteuthis jeletzkyi and "Paleocirroteuthis" haggarti (transferred to the genus Nanaimoteuthis) from the Cretaceous strata in Canada and Japan, indicating that Nanaimoteuthis was an octopus belonging to the group Cirrata and that members of this genus were some of the largest known invertebrates and among the largest known Cretaceous marine predators, is presented by Ikegami et al. (2026).^[45]
Jobbins et al. (2026) describe a gladius of a member of the genus Enchoteuthis from the Upper Cretaceous Pierre Shale (Manitoba, Canada) with pathologies interpreted as bite marks produced by a mosasaur or a large fish.^[46]

Bivalves

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes
Actinopteria grahni^[47]	Sp. nov	Valid	Richter et al.	Devonian		Brazil
Arca submontensis^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Bathytormus sparnacensis^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Bicornucopina acuminata^[49]	Sp. nov	Valid	Masse et al.	Early Cretaceous (Barremian-Aptian)		France	A member of the family Monopleuridae.
Botula kaeoensis^[50]	Sp. nov		Eagle in Eagle & Hayward	Eocene	Ruatangata Sandstone	New Zealand	A species of Botula.
Chama loubryi^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Concavodonta varius^[51]	Sp. nov	Valid	Wang, Zhan & Fang	Ordovician (Katian)	Xiazhen Formation	China	A member of the family Praenuculidae.
Corbula darpahnensis^[52]	Sp. nov	Valid	Kiel & Hadi in Kiel et al.	Miocene		Iran
Cyathodonta gilardeti^[53]	Nom. nov	Valid	Pacaud in Pacaud et al.	Eocene		France	A species of Cyathodonta; a replacement name for Thracia rugosa Bellardi (1852).
Cyathodonta tarbelliana^[53]	Sp. nov	Valid	Pacaud et al.	Eocene	Brassempouy Limestone	France	A species of Cyathodonta.
Eoplicatula nianduoensis^[54]	Sp. nov		Li et al.	Early Jurassic (Hettangian)	Germig Formation	China
Fidera flexa^[55]	Sp. nov		Wang et al.	Ordovician	Koumenzi Formation	China
Fontladrei^[56]	Gen. et sp. nov	Valid	Chaix & Grenier	Late Cretaceous (Campanian)		France	A member of the family Lucinidae. The type species is F. jebraki.
?Gafrarium troendlei^[57]	Sp. nov	Valid	Merle in Salvat et al.	Plio-Pleistocene		French Polynesia	A member of the family Veneridae.
Gryphaea (?Africogryphaea) geniculata^[58]	Sp. nov	Valid	Fürsich & Ayoub-Hannaa in Sadji et al.	Late Jurassic	Sfissifa Formation	Algeria	A member of the family Gryphaeidae.
Halicardia toyamaensis^[59]	Sp. nov	Valid	Kawase & Ichihara	Miocene	Kurosedani Formation	Japan	A species of Halicardia.
Homopleura parva^[49]	Sp. nov	Valid	Masse et al.	Early Cretaceous (Aptian)		France	A member of the family Monopleuridae.
Horiopleura arabica^[60]	Sp. nov	Valid	Masse et al.	Early Cretaceous (Aptian)	Qishn Formation	Oman	A member of the family Polyconitidae.
Horiopleura helviorum^[60]	Sp. nov	Valid	Masse et al.	Early Cretaceous (Aptian)		France	A member of the family Polyconitidae.
Hypelasma fritzlangi^[61]	Sp. nov	Valid	Schneider & Werner	Late Jurassic (Kimmeridgian)	Frankenalb Formation	Germany	A rudist bivalve belonging to the family Requieniidae.
Indotellina fakaauensis^[57]	Sp. nov	Valid	Merle in Salvat et al.	Plio-Pleistocene		French Polynesia	A member of the family Tellinidae.
Isoarca minima^[62]	Sp. nov		Ayoub-Hannaa & Fürsich in Ayoub-Hannaa, Fürsich & Abdelhady	Middle Jurassic (Bathonian to Callovian)	Kehailia Formation	Egypt	A member of Nuculanida belonging to the family Isoarcidae.
Liostrea paucistriata^[62]	Sp. nov		Ayoub-Hannaa & Fürsich in Ayoub-Hannaa, Fürsich & Abdelhady	Middle Jurassic (Bajocian to Callovian)	Kehailia Formation	Egypt
?Lunulicardia distorta^[57]	Sp. nov	Valid	Merle in Salvat et al.	Plio-Pleistocene		French Polynesia	Possibly a species of Lunulicardia.
Margaritifera araujensis^[63]	Sp. nov		Delvene & Munt in Delvene et al.	Early Cretaceous (Albian)	Escucha Formation	Spain	A species of Margaritifera.
Mazaevella^[64]	Gen. et comb. nov	Valid	Shilekhin, Biakov & Vdovichenko	Carboniferous-Permian (Gzhelian-Sakmarian)		Russia	A member of Pectinida belonging to the family Annuliconchidae. The type species is "Annuliconcha" placunensis Nelzina (1958). Published online in 2026, but the issue date is listed as December 2025.
Myostyla^[49]	Gen. et sp. nov	Valid	Masse et al.	Early Cretaceous (Aptian)		France	A member of the family Monopleuridae. The type species is M. ardescensis.
Nipponocardium^[65]	Gen. et comb. nov	Valid	Amano & Haga	Miocene-Pleistocene		Japan	A member of the family Cardiidae, subfamily Laevicardiinae. The type species is Cardium shiobarense Yokoyama (1926).
Nucula bauti^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Opisoma romeroi^[66]	Sp. nov	Valid	Cuesta et al.	Early Jurassic		Argentina	A member of the family Astartidae.
Palaeoneilo rectus^[51]	Sp. nov	Valid	Wang, Zhan & Fang	Ordovician (Katian)	Xiazhen Formation	China	A member of the family Cucullellidae.
Paraleptopecten aurelioi^[67]	Sp. nov	Valid	Santelli, Río & Rojas	Miocene	Gran Bajo del Gualicho Formation	Argentina	A scallop.
Plicatula pacaudi^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Praecaprina paquieri^[49]	Sp. nov	Valid	Masse et al.	Early Cretaceous (Aptian)		France	A member of the family Caprinidae.
Praecaprina tubifera^[49]	Sp. nov	Valid	Masse et al.	Early Cretaceous (Aptian)		France	A member of the family Caprinidae.
Praecaprina vacua^[49]	Sp. nov	Valid	Masse et al.	Early Cretaceous (Aptian)		France	A member of the family Caprinidae.
Protocardia magharensis^[62]	Sp. nov		Ayoub-Hannaa & Fürsich in Ayoub-Hannaa, Fürsich & Abdelhady	Middle Jurassic (Bathonian)	Kehailia Formation	Egypt
Protopotomida^[63]	Gen. et sp. nov		Delvene & Munt in Delvene et al.	Early Cretaceous (Albian)	Escucha Formation	Spain	A member of the family Unionidae. The type species is P. ariniensis.
Pseudexogyra^[58]	Gen. et sp. nov	Valid	Fürsich & Ayoub-Hannaa in Sadji et al.	Late Jurassic	Sfissifa Formation	Algeria	A member of the family Ostreidae. The type species is P. euryhalina.
Saalidiceras^[61]	Gen. et sp. nov	Valid	Schneider & Werner	Late Jurassic (Kimmeridgian)	Frankenalb Formation	Germany	A rudist bivalve belonging to the family Epidiceratidae. The type species is S. syllai.
Similodonta minor^[51]	Sp. nov	Valid	Wang, Zhan & Fang	Ordovician (Katian)	Xiazhen Formation	China	A member of the family Similodontidae.
Syncyclonema goyi^[68]	Sp. nov	Valid	Callapez, Barroso-Barcenilla, Berrocal-Casero & Pimentel in Callapez et al.	Late Cretaceous (Cenomanian)	Trouxemil Formation	Portugal	A member of the family Entoliidae.
Thracia sixi^[53]	Sp. nov	Valid	Pacaud et al.	Eocene	Brassempouy Limestone	France	A species of Thracia.
Thyasira obesula^[56]	Sp. nov	Valid	Chaix & Grenier	Late Cretaceous (Campanian)		France	A species of Thyasira.
Trigonoconcha brevis^[51]	Sp. nov	Valid	Wang, Zhan & Fang	Ordovician (Katian)	Xiazhen Formation	China	A member of the family Similodontidae.
"Unio" escuchana^[63]	Sp. nov		Delvene & Munt in Delvene et al.	Early Cretaceous (Albian)	Escucha Formation	Spain	A member of the family Unionidae.
Valclusella^[49]	Gen. et 2 sp. nov	Valid	Masse et al.	Early Cretaceous (Barremian-Aptian)		France	A member of the family Monopleuridae. The type species is V. valclusensis; genus also includes V. biconvexa.

Bivalve research

Mottin et al. (2026) report the discovery of a new marine bivalve fauna from the postglacial strata of the Permian Rio Bonito Formation (Santa Catarina, Brazil), correlate it with interglacial deposits of the Itararé Group 400 km to the north, and interpret Permian bivalve assemblages from southwestern Gondwana as indicating that glacial conditions associated with the Late Paleozoic icehouse persisted in the northern part of the Paraná Basin for a longer time than in the southern and central parts.^[69]
A review of all published Paleozoic parallelodontid genus- and species-group names is published by Friedel, Neubauer & Amler (2026).^[70]
Suárez & Hautmann (2026) study the taxonomic diversity and distinctness of Triassic marine bivalves, and argue that their recovery in the aftermath of the Permian–Triassic extinction event continued at least until the Norian.^[71]
Evidence of utility of the study of rudist shells from the Maastrichtian Cárdenas Formation (Mexico) in reconstruction of environmental conditions in the western Tethys Ocean during the Cretaceous is presented by Juárez-Aguilar et al. (2026).^[72]
Delvene et al. (2026) report evidence of preservation of elements of the reproductive system in specimens of Margaritifera valdensis from the Lower Cretaceous strata from the Isle of Wight (United Kingdom), and evidence of preservation of fossil embryos indicative of gill brooding in Early Cretaceous unionoid bivalves.^[73]
The first fossil bivalve pearl from the Cretaceous of Russia is reported from the Turonian strata of the Losevo section in the Voronezh Oblast by Shilekhin, Kalabin & Shchedukhin (2026).^[74]
Pérez, Mosquera & Cuitiño (2026) report the discovery of fossil material of Limopsis insolita from the Miocene Gaiman Formation (Argentina), extending its known geographic distribution northwards and representing the first unambiguous record of a member of the genus Limopsis in deeper-water settings in the region.^[75]
Knight (2026) studies the composition of two assemblages of Miocene (Tortonian) bivalves from S'Algar (Menorca, Spain), interpreted as originating from a middle ramp environment that changed through time as a result of changes in the frequency and directionality of storms and currents.^[76]
Amano, Hamuro & Hamuro (2026) describe new fossil material of Nipponocrassatella osawanoensis and "Oxyperas" osawanoensis from the Miocene strata of the Kurosedani Formation (Japan), and allocate the latter species to the genus Pseudoxyperas.^[77]
Amano (2026) describes new thyasirid and vesicomyid fossil material from the Pleistocene strata of the Umegase Formation (Japan), transfers "Thyasira" inflata Yabe & Nomura (1925) to the genus Maorithyas, and coins a replacement name Mendicula angolensis for the extant species Thyasira (Mendicula) inflata Payne & Allen (1991).^[78]
Osipova et al. (2026) revise the composition of the venerid assemblage from the Pleistocene Szekou Formation (Taiwan).^[79]
Evidence from the study of bivalves from the Pleistocene and Holocene strata from Florida (United States) and Italy, indicating that trematode infestation caused abnormal morphological development of shells of affected bivalves and that hampers species delineation and morphometric analyses of fossil bivalves, is presented by Jang et al. (2026).^[80]

Gastropods

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes
Acrostemma anatolica^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Týrtar Formation	Turkey	A member of the family Cylichnidae.
Acteon antipinguis^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Grund Formation	Austria Hungary Poland Romania	A species of Acteon.
Acteon gutta^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Dej Formation	Hungary Romania	A species of Acteon.
Acteon romanicus^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Dej Formation	Romania	A species of Acteon.
Acteon trifasciatus^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Grund Formation	Austria Germany?	A species of Acteon.
Acteon viciani^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Pétervására Formation	Hungary	A species of Acteon.
Acteon vindobonensis^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Baden Formation	Austria	A species of Acteon.
Acteonella murcielaguensis^[82]	Sp. nov	Valid	Aguilar et al.	Late Cretaceous (Maastrichtian)	El Viejo Formation	Costa Rica
Aglaianilla^[83]	Gen. et 2 sp. et comb. nov	Valid	Harzhauser, Micali & Landau	Miocene and Pliocene		Czech Republic Italy Romania Spain	A member of the family Pyramidellidae. The type species is A. aglaia; genus also includes new species A. auxo, as well as "Turbonilla" malacitana Landau & Micali (2021) and "Turbonilla" peculiaris Tabanelli et al. (2023).
Alcithopsis^[84]	Gen. et sp. nov	Valid	Merle & Pacaud	Eocene		France	A member of the family Volutidae. The type species is A. insperata.
Allmoniella ? citriformis^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Allmoniella lupinus^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Amplogladius wrigleyi^[86]	Nom. nov	Valid	Kovács et al.			United Kingdom	A member of the family Rostellariidae.
Angaria dalmadeakae^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary	A species of Angaria.
Angulariopsis^[87]	Gen. et comb. nov	Valid	Monari et al.	Late Triassic (Rhaetian) and Early Jurassic (Hettangian)		Austria France Luxembourg	A member of the family Purpurinidae. The type species is "Angularia" nivernensis Dareste de la Chavanne (1912); genus also includes "Angularia" corallina Nützel et al. (2022).
Anthracocycla^[88]	Gen. et sp. et comb. nov	Valid	Matamales-Andreu	Eocene and Oligocene	Peguera Formation	Spain	A possible member of the family Helicodontidae. The type species is A. decipiens; genus also includes "Lychnosis" hermitei Vidal (1917).
Anularya bengu^[89]	Sp. nov	Valid	Xiang, Wang, He & Lv in Xiang et al.	Neogene	Xiaolongtan Formation	China	A species of Anularya.
Asiaharpa javanensis^[90]	Sp. nov	Valid	Altaba & Dovesi	Miocene		Indonesia	A member of the family Harpidae.
Asmundanilla^[83]	Gen. et comb. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania	A member of the family Pyramidellidae. The type species is "Turbonilla (Pyrgostylus)" bimonilifera Boettger (1902); genus also includes "Turbonilla (Pyrgostylus)" selecta Boettger (1902).
Ataxocerithium ireki^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Pińczów Formation	Poland Slovakia
Ataxocerithium palotasae^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria Czech Republic Poland Romania
Athleta caunelha^[92]	Sp. nov	Valid	Pacaud, Ledon & Garcia	Eocene		France	A species of Athleta.
Athleta cazesi^[92]	Sp. nov	Valid	Pacaud, Ledon & Garcia	Eocene		France	A species of Athleta.
Athleta loubryi^[92]	Sp. nov	Valid	Pacaud, Ledon & Garcia	Eocene		France	A species of Athleta.
Athleta maxencei^[92]	Sp. nov	Valid	Pacaud, Ledon & Garcia	Eocene		France	A species of Athleta.
Athleta szumzeri^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary	A species of Athleta.
Attiliosa juditae^[93]	Sp. nov	Valid	Kovács & Vicián	Miocene		Hungary
Barycypraea angustipyga^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Barycypraea diabolica^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Bezanconia zsuzsannae^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary	A member of the family Cerithiidae.
Bittium biskupici^[95]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria	A species of Bittium.
Bittium castori^[95]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania	A species of Bittium.
Bittium pallgergelyi^[95]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria	A species of Bittium.
Bittium parvapyramis^[95]	Sp. nov	Valid	Harzhauser & Landau	Miocene		Ukraine	A species of Bittium.
Bittium polluxi^[95]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania	A species of Bittium.
Bourguetia bipartita^[87]	Sp. nov	Valid	Monari et al.	Early Jurassic (Hettangian)	Luxembourg Sandstone	Luxembourg	A member of the family Pseudomelaniidae.
Brouchilda^[87]	Gen. et 2 sp. et comb. nov	Valid	Monari et al.	Early Jurassic (Hettangian)	Luxembourg Sandstone	France Luxembourg	A member of the family Mathildidae. The type species is B. laevigata; genus also includes new species B. mulleri, as well as "Promathildia" bicarinata Dareste de la Chavanne (1912).
Bruggemania^[96]	Gen. et comb. nov	Valid	Petuch & Berschauer	Pliocene and Pleistocene	Waccamaw Formation	United States ( Florida North Carolina)	A member of the family Volutidae. The type species is "Scaphella" precursor Gardner (1948).
Buccinanops halleri^[97]	Sp. nov	Valid	Pérez et al.	Miocene	Gaiman Formation	Argentina	A species of Buccinanops.
Bufonaria chabaharensis^[52]	Sp. nov	Valid	Kiel & Hadi in Kiel et al.	Miocene		Iran
Bulla? elalbanii^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene		Ukraine	Possibly a species of Bulla.
Bulla niauensis^[57]	Sp. nov	Valid	Merle in Salvat et al.	Plio-Pleistocene		French Polynesia	A species of Bulla.
Calliomphalus (Planolateralus) montenati^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Calliostoma gallaensis^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary	A species of Calliostoma.
?Calliostoma monswavinarensis^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Calliostoma radoslavi^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary	A species of Calliostoma.
Campanile metaisi^[98]	Sp. nov	Valid	Merle & Pacaud in Merle et al.	Eocene	Lakhra Formation	Pakistan	A species of Campanile.
Campanistylus^[98]	Gen. et sp. nov	Valid	Merle & Pacaud in Merle et al.	Eocene	Lakhra Formation	Pakistan	A member of the family Campanilidae. The type species is C. lakhraensis.
Cancilla makranensis^[52]	Sp. nov	Valid	Kiel & Hadi in Kiel et al.	Miocene		Iran
Carboathleta^[86]	Gen. et comb. nov	Valid	Kovács et al.	Eocene		Hungary	The type species is "Voluta" pseudobulbosa Strausz (1966).
Cerithiopsis s.l. alexnuetzeli^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria
Cerithiopsis s.l. bifida^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria Czech Republic
Cerithiopsis columnaeformis^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria
Cerithiopsis gemini^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria Czech Republic
Cerithiopsis s.l. lima^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Austria Romania
Cerithiopsis s.l. nanocancellata^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Hungary Romania Slovakia
Cerithiopsis paratethyca^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Austria Hungary Romania
Cerithiopsis s.l. pimentai^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria
Cerithiopsis s.l. supressa^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria Czech Republic
Cerithium bardhani^[99]	Sp. nov	Valid	Bose et al.	Miocene	Gaj Formation	India	A species of Cerithium.
Cerithium niauense^[57]	Sp. nov	Valid	Merle in Salvat et al.	Pliocene to late Holocene		French Polynesia	A species of Cerithium.
Chelidonura piseraii^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Pińczów Formation	Poland	A species of Chelidonura.
Chelotia academia^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary	A member of the family Pleurotomariidae.
Chemnitzia dione^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Chemnitzia kelaino^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Hungary
Chemnitzia merope^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Chemnitzia nephele^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Chemnitzia phaio^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Chemnitzia pleione^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Chemnitzia polyxo^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Chemnitzia taygete^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Cigclirina costai^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Cingulina erebos^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Cipangopaludina somnumbra^[89]	Sp. nov	Valid	Xiang, Wang, He & Xie in Xiang et al.	Neogene	Ciying Formation	China	A species of Cipangopaludina.
Clathropsis dira^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania
?Clelandella saurashtraensis^[99]	Sp. nov	Valid	Bose et al.	Miocene	Gaj Formation	India	Possibly a species of Clelandella.
?Clypeostoma vertusensis^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Colombellina crassigranulata^[101]	Sp. nov	Valid	Bakayeva et al.	Late Jurassic		Bulgaria	A member of the family Colombellinidae.
Colubratriton istvangurdoni^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary	A member of the family Cancellariidae.
Columbella petiti^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Columbella vermeiji^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Conotomaria stoliczkai^[102]	Sp. nov		Ghosh et al.	Late Cretaceous		India	A member of the family Pleurotomariidae.
Contrasimnia praecedens^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Conus georgesrichardi^[57]	Sp. nov	Valid	Merle in Salvat et al.	Plio-Pleistocene		French Polynesia	A species of Conus.
Conus letourneuxi^[57]	Sp. nov	Valid	Merle in Salvat et al.	Plio-Pleistocene		French Polynesia	A species of Conus.
Coralliophila janosi^[93]	Sp. nov	Valid	Kovács & Vicián	Miocene		Hungary
Cosmioconcha sowerbyi^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Costoanachis hickmanae^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Costoanachis pflugi^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Cotonopsis gearyae^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Cribrarula complanata^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A species of Cribrarula.
Cribrarula exigua^[103]	Sp. nov	Valid	Bergonzoni	Oligocene		Oman	A species of Cribrarula.
Cylichna atacosensis^[104]	Sp. nov	Valid	Masse et al.	Paleocene (Thanetian)		France	A species of Cylichna.
Cylichna caudex^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Grund Formation	Austria Hungary Poland	A species of Cylichna.
Cylichna dolium^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Baden Formation	Austria Czech Republic	A species of Cylichna.
Cylichna eschnerae^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene		Czech Republic	A species of Cylichna.
Cylichna miosimplex^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Baden Formation	Austria Czech Republic	A species of Cylichna.
Cylichna steiningeri^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Fels Formation	Austria	A species of Cylichna.
Cylichna straussi^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Fels Formation	Austria	A species of Cylichna.
Cymbularia sinensis^[105]	Sp. nov		Li et al.	Ordovician (Katian)	Koumenzi Formation	China	A member of the family Bellerophontidae.
Cyproglobina demyanovi^[106]	Sp. nov	Valid	Pacaud	Eocene		Ukraine	A member of the family Cypraeidae.
Dakshinatomaria^[102]	Gen. et sp. nov		Ghosh et al.	Late Cretaceous		India	A member of the family Pleurotomariidae. Genus includes new species D. rajendrai.
Dalipaludina zhaolu^[89]	Sp. nov	Valid	Xiang, Wang, He & Chen in Xiang et al.	Neogene	Ciying Formation	China	A member of the family Viviparidae.
Digitolabrum juttae^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Ecphora (Powhatan) gardnerae jeffersoni^[96]	Ssp. nov	Valid	Petuch & Berschauer	Miocene	Eastover Formation	United States ( Maryland Virginia)	A member of the family Muricidae.
Endopachychilus liveranii^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Ensaimadina^[88]	Gen. et 2 sp. nov	Valid	Matamales-Andreu	Oligocene	Cala Blanca Formation	Spain	A possible member of the family Helicodontidae. The type species is E. mallorquina; genus also includes E. bauzai.
Eoconus dudarensis^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Eoconus konradi^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Eovolva texensis^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Epalxis martae^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Episcomitra gradata^[107]	Sp. nov	Valid	Demyanov & Pacaud	Eocene		Ukraine	A species of Episcomitra.
Erronea epimikes^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Euterpenilla^[83]	Gen. et 2 sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania	A member of the family Pyramidellidae. The type species is E. euterpe; genus also includes new species E. eurynome.
Falsathleta^[86]	Gen. et sp. nov	Valid	Kovács et al.	Eocene		Hungary	Genus includes new species F. zoltani.
Falsuszafrona emilyvokesae^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Falsuszafrona haroldvokesi^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Favartia roberti^[108]	Sp. nov	Valid	Forli, Cresti & Pagli			Italy	A species of Favartia.
Fimbrivasum bulgaricum^[109]	Sp. nov	Valid	Bakayeva et al.	Early Cretaceous (Barremian)	Gorna Oryahovitsa Formation	Bulgaria	A member of the family Vasidae.
Ficatrivia eszterae^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Ficus nexilis hungarica^[86]	Ssp. nov	Valid	Kovács et al.	Eocene		Hungary	A member of the family Ficidae.
Flexopteron agnesae^[93]	Sp. nov	Valid	Kovács & Vicián	Miocene		Hungary
Fusinus bouchardae^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Garviea cervicula^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Garviea prunellum^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Gibbula strauszi^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary	A species of Gibbula.
Globicypraea celestelindae^[103]	Sp. nov	Valid	Bergonzoni	Oligocene		Oman	A member of the family Cypraeidae.
Globularia delsatei^[87]	Sp. nov	Valid	Monari et al.	Early Jurassic (Hettangian)	Luxembourg Sandstone	Luxembourg
Globulocerithium gallaense^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary	A member of the family Cerithiidae.
Granulolabium cretaceum^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Graphis tisiphone^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Gruendelifusus^[87]	Gen. et sp. nov	Valid	Monari et al.	Early Jurassic (Hettangian)	Luxembourg Sandstone	Luxembourg	A possible member of the superfamily Mathildoidea. The type species is G. melusinae.
Harzhauseria^[86]	Gen. et sp. nov	Junior homonym	Kovács et al.	Eocene		Hungary	A member of the family Batillariidae. Genus includes new species H. hungarica. The generic name is preoccupied by Harzhauseria Neubauer & Wesselingh (2023).
Haustator bergierensis^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Hemiconus arpadzsoldosi^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Hesychianola^[83]	Gen. et comb. et sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Czech Republic Romania	A member of the family Pyramidellidae. The type species is "Turbonilla (Pyrgolamprus)" paraterebralis Boettger (1902); genus also includes new species H. hesychia, as well as "Turbonilla (Pyrgolampros) pseudoterebralis" var. explicatula Sacco (1892).
Horologica elektra^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania
Horologica meganodulosa^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania
Horologica morus^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania
Horologica perugiai^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania
Iberus royobolivari^[110]	Nom. nov	Valid	Talaván Serna & Talaván Gómez	Miocene		Spain	A replacement name for Helix bolivari Royo Gómez (1922).
Iniforis vindobonensis^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria Romania
Javacypraea acclaranda^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Javacypraea furuncula^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Javacypraea pustula^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Jenneria lorenzi^[111]	Sp. nov	Valid	Celzard	Miocene		Indonesia	A member of the family Ovulidae.
Joculator ellipticus^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania
Joculator philippei^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Baden Formation	Austria
Joculator pustulosus^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Austria Romania
Jujubinus dwarkaensis^[99]	Sp. nov	Valid	Bose et al.	Miocene	Gaj Formation	India	A species of Jujubinus.
Jurazyga^[87]	Gen. et comb. nov	Valid	Monari et al.	Early Jurassic (Hettangian and Pliensbachian)		France Italy Luxembourg	A member of the family Zygopleuridae. The type species is "Melania" theodori Terquem (1855); genus also includes "Zygopleura" subnodosa (d'Orbigny 1850), "Zygopleura" vinosimonensis Fischer & Weber (1997), "Chemnitzia" polyplecta Gemmellaro (1878), "Chemnitzia" moorei Gemmellaro (1878), "Chemnitzia" appenninica Gemmellaro (1878) and "Chemnitzia" veturia Gemmellaro (1878).
Kaimella^[87]	Gen. et sp. nov	Valid	Monari et al.	Early Jurassic (Hettangian)	Luxembourg Sandstone	Luxembourg	A possible member of the family Cimidae. The type species is K. tenuilineata.
Lozouetina megahani^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Luria liveranii^[103]	Sp. nov	Valid	Bergonzoni	Oligocene		Oman	A species of Luria.
Lychnopsis applanata^[88]	Sp. nov	Valid	Matamales-Andreu	Oligocene	Cala Blanca Formation	Spain	A possible member of the family Helicodontidae.
Lychnopsis juarezi^[88]	Sp. nov	Valid	Matamales-Andreu	Oligocene	Cala Blanca Formation	Spain	A possible member of the family Helicodontidae.
Lyncina compacta^[103]	Sp. nov	Valid	Bergonzoni	Oligocene		Oman	A species of Lyncina.
Lyncina crassilabiata^[103]	Sp. nov	Valid	Bergonzoni	Oligocene		Oman	A species of Lyncina.
Lyncina janreuteri^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia
Lyrofusus veberi^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Macgintopsis mauryae^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Maestratia omanensis^[103]	Sp. nov	Valid	Bergonzoni	Oligocene		Oman	A member of the family Cypraeidae.
Marshallopsis jansseni^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania
Marshallopsis vasilyani^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania
Mauritia absoluta^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Mauritia inabsoluta^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Mauritia plioarabica^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Mazatlania freiheiti^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Megalovicetia^[86]	Gen. et comb. nov	Valid	Kovács et al.	Eocene		France Hungary Italy	A member of the family Cypraeidae. The type species is "Vicetia" bizzottoi Dominici, Fornasiero & Giusberti (2020); genus also includes "Ovula" bellardii Bellardi (1852).
Metisnilla metis^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania	A member of the family Pyramidellidae.
Metaconulus evanicsi^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Microschiza pauciornata^[87]	Sp. nov	Valid	Monari et al.	Early Jurassic (Hettangian)	Luxembourg Sandstone	Luxembourg	A member of the family Purpuroideidae.
Miolyncina virgiliana^[103]	Sp. nov	Valid	Bergonzoni	Oligocene		Oman	A member of the family Cypraeidae.
Miracypraea^[112]	Gen. et 2 sp. nov	Valid	Pacaud, Gómez-García & Celzard	Eocene		Hungary Spain	A member of the superfamily Cypraeoidea belonging to the family Eocypraeidae. The type species is M. alluensis; genus also includes M. zitae Kovács et al.^[86]
Mitrella beui^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Mitrella grovesi^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Mitrella hodsoni^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Mitrella ingrami^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Monophorus balteatus^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Austria Hungary Romania Slovakia Ukraine
Mormula kyma^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Murexsul pliozezae^[108]	Sp. nov	Valid	Forli, Cresti & Pagli			Italy	A species of Murexsul.
Naria microhelvola^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Naria porarina^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Naria quasierosa^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Nassarina pseudoglypta^[100]	Sp. nov	Valid	Landau & Monsecour			Dominican Republic
Nassarina williamdalli^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Nassarius anisi^[99]	Sp. nov	Valid	Bose et al.	Miocene	Gaj Formation	India	A species of Nassarius.
Neubaueriella^[81]	Gen. et comb. nov	Valid	Harzhauser, Landau & Malaquias	Miocene		Austria Czech Republic Hungary Romania Slovakia	A member of the family Haminoeidae; a new genus for "Atys (Alicula)" lapugyensis Berger (1949).
Nitidella johnsoni^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Ocenebra inzanii^[93]	Sp. nov	Valid	Kovács & Vicián	Miocene		Hungary
Oonia feidtorum^[87]	Sp. nov	Valid	Monari et al.	Early Jurassic (Hettangian)	Luxembourg Sandstone	Luxembourg	A member of the family Ampullinidae.
Oonia haasi^[87]	Sp. nov	Valid	Monari et al.	Early Jurassic (Hettangian)	Luxembourg Sandstone	Luxembourg	A member of the family Ampullinidae.
Palmadusta giromontina^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Parapyrgiscus orea^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Czech Republic	A member of the family Pyramidellidae.
Paraturbonilla pliocaenica^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Pliocene		Spain
Parietiplicatum kalaallitianum^[113]	Sp. nov	Valid	Pacaud	Paleocene	Agatdal Formation	Greenland	A member of the family Acteonidae.
Parietiplicatum tanasi^[113]	Nom. nov	Valid	Pacaud	Late Cretaceous (Campanian-Maastrichtian)		United States ( Tennessee)	A member of the family Acteonidae; a replacement name for Acteon conicus Wade (1926).
Parietiplicatum tenuistriatum^[113]	Sp. nov	Valid	Pacaud	Paleocene	Agatdal Formation	Greenland	A member of the family Acteonidae.
Parthenina alkyone^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Parthenina beroe^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Parthenina dodona^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Czech Republic
Parthenina eidyia^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Parthenina erato^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Poland
Parthenina keto^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Parthenina nofronii^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Ukraine
Parthenina sagaritis^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Parthenina steini^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Parthenina thalia^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Parvanachis nehmi^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Parvanachis silvai^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Phenacovolva polita^[111]	Sp. nov	Valid	Celzard	Miocene		Indonesia	A member of the family Ovulidae.
Phyllocoma letkesensis^[93]	Sp. nov	Valid	Kovács & Vicián	Miocene		Hungary
Plesioharpa^[90]	Gen. et comb. nov		Altaba & Dovesi	Oligocene		Peru	A member of the family Harpidae. The type species is "Harpa" myrmia Olsson (1931).
Priscoficus laszloi^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Propustularia peculiaris^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Pseudavena bella^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene		Czech Republic	A member of Heterobranchia of uncertain affinities.
Pseudocypraea alba^[111]	Sp. nov	Valid	Celzard	Miocene		Indonesia	A member of the family Ovulidae.
Pseudolivella albaresensis^[104]	Sp. nov	Valid	Masse et al.	Eocene (Ypresian)		France	An olive snail.
?Pseudopisania cretacea^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Purpuradusta tridens^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Pustularia proglobulus^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Pyrgiscus ananke^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Pyrgiscus karya^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Pyrgiscus pasiphe^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Pyrgostylus adarsteia^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Pyrgostylus asterope^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Pyrgostylus lachesis^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Pyrgulina alekto^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Hungary
Pyrgulina hesione^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Pyrgulina moira^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Pyrunculus microromanicus^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Dej Formation	Romania	A member of the family Retusidae.
Pyrunculus szobiensis^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene		Austria Hungary	A member of the family Retusidae.
Pyrunculus zuschini^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Baden Formation	Austria Romania	A member of the family Retusidae.
Qilianodiscus^[105]	Gen. et sp. nov		Li et al.	Ordovician (Katian)	Koumenzi Formation	China	A member of the family Bellerophontidae. Genus includes new species Q. qilianensis.
Ransoniella gracilirostris^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
"Retilaskeya" pulchra^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania	A member of the family Newtoniellidae.
Retusa mystica^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Dej Formation	Austria Hungary Romania Slovakia	A species of Retusa.
Rhinoclavis parvisulcatus^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Rictaxis austriacus^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Grund Formation	Austria	A species of Rictaxis.
Rictaxis siedli^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Baden Formation	Austria	A species of Rictaxis.
Rictaxis ursulae^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Grund Formation	Austria	A species of Rictaxis.
Ringicula daisyae^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Dej Formation	Romania	A species of Ringicula.
Roxania bomba^[81]	Nom. nov	Valid	Harzhauser, Landau & Malaquias	Miocene		Austria	A species of Roxania; a replacement name for Sabatia callifera helvetica Berger (1949).
Roxania oviformis^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Baden Formation	Austria	A species of Roxania.
Roxania pila^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Dej Formation	Romania	A species of Roxania.
Sabatia quasimodoi^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene		Czech Republic	A species of Sabatia.
Scaphander alatissimus^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Grund Formation	Austria	A species of Scaphander.
Scaphander catena^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Dej Formation	Bosnia and Herzegovina? Romania	A species of Scaphander.
Scaphander krijgsmani^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Dej Formation	Romania	A species of Scaphander.
Scaphander perforatus^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene	Baden Formation	Austria Czech Republic	A species of Scaphander.
Scaphander schollnbergeri^[81]	Sp. nov	Valid	Harzhauser, Landau & Malaquias	Miocene		Czech Republic Hungary?	A species of Scaphander.
Simnia akersae^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Sinaxila babosicoensis^[100]	Sp. nov	Valid	Landau & Monsecour	Pliocene		Dominican Republic
Sparnollonia^[48]	Gen. et sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France	A member of the family Colloniidae. The type species is S. bicarinata.
Sphaerocypraea extensa^[114]	Sp. nov	Valid	Zamberlan & Lovato	Eocene		Italy	A species of Sphaerocypraea.
Sphaerovula^[85]	Gen. et 2 sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)	Genus includes new species S. ericksoni and S. stenzeli.
Staphylaea incisa^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Steironepion gabbi^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Steironepion heitzi^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Strobiligera cecalupoi^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene		Czech Republic
Strobiligera sabellii^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania
Subepona burlesonensis^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Sulcoturbonilla oizys^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Sveltella binkhorsti^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Synthopsis pachygaster^[91]	Sp. nov	Valid	Harzhauser & Landau	Miocene	Dej Formation	Romania
Talostolida dactylus^[94]	Sp. nov	Valid	Lorenz	Neogene		Indonesia	A member of the family Cypraeidae.
Tangarilda darestei^[87]	Sp. nov	Valid	Monari et al.	Early Jurassic (Hettangian)	Luxembourg Sandstone	Luxembourg	A member of the family Mathildidae.
Tchangmargarya ashimaae^[89]	Sp. nov	Valid	Xiang, Wang, He & Chen in Xiang et al.	Quaternary	Ciying Formation	China	A member of the family Viviparidae.
Tchangmargarya buhou^[89]	Sp. nov	Valid	Xiang, Wang, He & Chen in Xiang et al.	Neogene	Ciying Formation	China	A member of the family Viviparidae.
Tchangmargarya cunshan^[89]	Sp. nov	Valid	Xiang, Wang, He & Lv in Xiang et al.	Quaternary	Ciying Formation	China	A member of the family Viviparidae.
Tchangmargarya laojin^[89]	Sp. nov	Valid	Xiang, Wang, He & Chen in Xiang et al.	Neogene	Ciying Formation	China	A member of the family Viviparidae.
Tchangmargarya liyoufui^[89]	Sp. nov	Valid	Xiang, Wang, He & Chen in Xiang et al.	Quaternary	Ciying Formation	China	A member of the family Viviparidae.
Tchangmargarya luyizhii^[89]	Sp. nov	Valid	Xiang, Wang, He & Chen in Xiang et al.	Quaternary	Ciying Formation	China	A member of the family Viviparidae.
Tchangmargarya mohou^[89]	Sp. nov	Valid	Xiang, Wang, He & Chen in Xiang et al.	Neogene	Ciying Formation	China	A member of the family Viviparidae.
Tchangmargarya sparkleae^[89]	Sp. nov	Valid	Xiang, Wang, He & Chen in Xiang et al.	Quaternary	Ciying Formation	China	A member of the family Viviparidae.
Tchangmargarya yangjizhoui^[89]	Sp. nov	Valid	Xiang, Wang, He & Chen in Xiang et al.	Neogene	Ciying Formation	China	A member of the family Viviparidae.
Tchangmargarya yumi^[89]	Sp. nov	Valid	Xiang, Zha, He & Chen in Xiang et al.	Quaternary	Ciying Formation	China	A member of the family Viviparidae.
Tchangmargarya zhangxianmingi^[89]	Sp. nov	Valid	Xiang, Zha, He & Chen in Xiang et al.	Neogene	Ciying Formation	China	A member of the family Viviparidae.
?Tectus acmantensis^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
?Tectus fraterculus^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
?Tectus senarmonti^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Trabecula terpsichore^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Traceya^[85]	Gen. et sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)	Genus includes new species T. zyzania.
Tragula euphrosyne^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Transovula parvabrazensis^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Triphora (s. lato) fabresa^[104]	Nom. nov	Valid	Masse et al.	Eocene (Ypresian)		France	A member of the family Triphoridae; a replacement name for Triforis (Epetrium) longissimus Doncieux (1908).
Turbonilla alkmene^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Turbonilla anaxo^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Turbonilla andromeda^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Turbonilla chariklo^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Turbonilla cymadoce^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Turbonilla deiopea^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Turbonilla echo^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Turbonilla galaxaule^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Turbonilla harmonia^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Turbonilla kalypso^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Czech Republic
Turbonilla koryphe^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Turbonilla lilaia^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Turbonilla ozomene^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Turbonilla pherusa^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Austria
Turbonilla ptelea^[83]	Sp. nov	Valid	Harzhauser, Micali & Landau	Miocene		Romania
Turritelloidea? bockfielsensis^[87]	Sp. nov	Valid	Monari et al.	Early Jurassic (Hettangian)	Luxembourg Sandstone	Luxembourg	A member of the family Gordenellidae.
Unitas stipii^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Unitas vargai^[86]	Sp. nov	Valid	Kovács et al.	Eocene		Hungary
Vermetus jyllandensis^[115]	Sp. nov	Valid	Kočí et al.	Oligocene	Brejning Formation	Denmark	A species of Vermetus.
?Vicinocerithium heberti^[48]	Sp. nov	Valid	Merle	Late Cretaceous (Maastrichtian)		France
Wadeina^[101]	Gen. et comb. nov	Valid	Bakayeva et al.	Late Cretaceous (Campanian)	Coon Creek Formation	United States ( Mississippi Tennessee)	A member of the family Personidae. The type species is "Colombellina" americana Wade (1926).
Xandarovula praecursor^[85]	Sp. nov	Valid	Dolin & Garvie	Eocene		United States ( Texas)
Zanassarina jungi^[100]	Sp. nov	Valid	Landau & Monsecour	Miocene		Dominican Republic
Zikkuratia saqqaqana^[113]	Sp. nov	Valid	Pacaud	Paleocene	Agatdal Formation	Greenland	A member of the family Retusidae.
Zitaia^[86]	Gen. et sp. nov	Valid	Kovács et al.	Eocene		Hungary	Genus includes new species Z. szilviae.

Gastropod research

Evidence of a southward expansion of nerineoid gastropods from the Boreal Realm into the Tethyan Realm during the Jurassic period is presented by Leshno Afriat, Rabinovich & Edelman-Furstenberg (2026).^[116]
Li, Xiao & Yu (2026) report the discovery of new fossil material of Coptocheilus electrothauma (originally named Schistoloma electrothauma) from the Cretaceous amber from Myanmar, and revise the diagnostic traits of this species.^[117]
The first known fossils of members of extant species Lanayrella vagabunda are reported from the Miocene strata of the Monte León Formation (Argentina) by Di Luca & Pastorino (2026).^[118]
Botka & Magyar (2026) revise the late Miocene lymnaeid assemblage from the Lake Pannon in Central Europe, identifying 11 species within five genera.^[119]
Systematic revision of Neogastropoda, including a review of their fossil record, is published by Fedosov et al. (2026).^[120]
Merle & Pacaud (2026) classify "Murex" subfusifomis as a member of the genus Pseudotrophonopsis.^[121]
Evidence of impact of preservational biases on biodiversity patterns of Cretaceous and Paleogene gastropods estimated from their fossil record is presented by Crestohl & Bush (2026).^[122]
Osipova & Lin (2026) study the composition of the assemblage of pelagic gastropods from the Pleistocene strata of the Szekou Formation (Taiwan), and find no evidence of significant spatial and temporal separation of Pleistocene holoplanktonic gastropod assemblages from different parts of the Indo–West Pacific region.^[123]

Other molluscs

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes
Cadulus scarabinorum^[124]	Sp. nov	Valid	Roco-Villablanca, Rivadeneira & Nielsen	Miocene	Lacui Formation	Chile	A tusk shell, a species of Cadulus.
Dischides nor^[124]	Sp. nov	Valid	Roco-Villablanca, Rivadeneira & Nielsen	Miocene	Lacui Formation	Chile	A tusk shell, a species of Dischides.
Fissidentalium taverai^[124]	Sp. nov	Valid	Roco-Villablanca, Rivadeneira & Nielsen	Miocene	Lacui Formation	Chile	A tusk shell, a species of Fissidentalium.
Polyschides pichi^[124]	Sp. nov	Valid	Roco-Villablanca, Rivadeneira & Nielsen	Miocene	Lacui Formation	Chile	A tusk shell, a species of Polyschides.
Prosinuites dazhuangensis^[125]	Sp. nov		Gong et al.	Cambrian	Xinji Formation	China	A helcionellid.

Other molluscan research

Hou et al. (2026) provide new information on the sclerite ultrastructure of Cambrian maikhanellids from the Kuanchuanpu Formation (China), and interpret maikhanellids as a distinct clade in the stem group of Mollusca.^[126]
A study on the microstructure of shells of Bemella simplex, Latouchella korobkovi and Merismoconcha tommotica from the Cambrian Bayangol Formation (Mongolia), providing evidence of occurrence of a bidirectional foliated aragonite microstructure, is published by Xia & Li (2026).^[127]

General research

Evidence from the study of the molluscan fossil record, indicative of higher frequency of origination of unique and first occurrences of repeated phenotypes during the first 96 million years of the evolutionary history of the group (in the Cambrian and Ordovician) than during the remaining 444 million years of their history, is presented by Vermeij & Thomson (2026).^[128]
A study on the fossil record of bivalves and gastropods from the North American Pacific coast ranging from the Late Cretaceous to the Eocene, providing evidence of loss of morphological diversity after the Cretaceous–Paleogene extinction event and a recovery during the Paleocene, is published by Contreras-Figueroa, Hendy & Aragón (2026).^[129]
Morales-Ortega & González-Barba (2026) study the impact climate and environmental changes on composition of Eocene molluscan assemblages from North and South America, reporting evidence of faunal exchanges between the Atlantic, Pacific and Caribbean Sea, and evidence indicating that peaks of molluscan biodiversity coincided with hyperthermal events.^[130]
Bellosi et al. (2026) revise the age and distribution of the molluscan assemblages from Patagonia living at the time of the Chattian-Langhian marine incursions into southern South America, and provide calibrated dating of the youngest fauna dominated by tropical species.^[131]
A study on the fossil record of late Neogene bivalves and gastropods from the Atlantic coast of North America, providing evidence of links between basal metabolic rates and extinction patterns of the studied molluscs, is published by Rojas-Ariza, Strotz & Lieberman (2026).^[132]
Evidence from the study of the fossil record of molluscs from the East Pisco Basin on the Peruvian continental margin ranging from the late Miocene to the present, indicative of a major faunal shift between 6 and 4 million years ago, is presented by Medina-Franco et al. (2026).^[133]
DeVries (2026) studies the composition of late Pliocene and Pleistocene marine molluscan assemblages from northwestern Peru, and reports evidence of a shift from a cool-water to warm-water fauna during the Pleistocene that might have been linked to uplift of the coastal plain and/or altered equatorial circulation.^[134]
Betz et al. (2026) evaluate functional traits of Pliocene-Holocene bivalves and gastropods from the West Atlantic, finding no evidence of a significant association of the studied traits with increased extinction risk of the studied molluscs.^[135]
Kiel (2026) reports evidence from the study of extant and extinct molluscs from cold seep environments indicative of a dip of diversity of the studied mollucs from 200 to 1000 m depth in subtropical regions that persisted at least since Oligocene, interpreted as likely linked to presence of oxygen minimum zones.^[136]

References

1 2 3 4 Whittingham, M.; McLachlan, S. M. S.; Graham, R.; Haggart, J. W. (2026). "New and revised heteromorph ammonites (family Nostoceratidae) from the Santonian–Campanian (Upper Cretaceous) of the Nanaimo Group of Vancouver Island, British Columbia, Canada". Cretaceous Research. 184 106361. doi:10.1016/j.cretres.2026.106361.
1 2 3 4 Lehmann, J.; Bayliss, H. M. (2026). "Reassessment of Tropaeum, Proaustraliceras, Australiceras, Ammonitoceras, Caspianites and related large ammonites from the Aptian of England and Germany". Cretaceous Research. 186 106425. doi:10.1016/j.cretres.2026.106425.
1 2 3 Pieroni, V.; Balini, M. (2026). "Upper Anisian to Ladinian ammonoids from Rasa (San Salvatore Dolomite, Western Southern Alps, Italy)". Rivista Italiana di Paleontologia e Stratigrafia. 132 (1): 207–267. doi:10.54103/2039-4942/29801.
↑ Mitta, V. V.; Zenina, Ju. V.; Meleshin, I. A. (2026). "First Finds of Eckhardites (Ammonoidea: Cardioceratidae) in the Upper Bathonian of the Russian Platform". Paleontological Journal. 59 (6): 620–628. doi:10.1134/S0031030125600982.
↑ Dietze, V.; Auer, W.; Schweigert, G. (2026). "Upper Aalenian and Lower Bajocian (Middle Jurassic) Hammatoceratinae (Ammonitina) of the Wutach area (SW Germany)". Palaeodiversity. 19 (1): 51–89. doi:10.18476/pale.v19.a3.
↑ Wierzbowski, A. (2026). "New Passendorferiinae ammonites from the upper Bimammatum Zone (Hauffianum Subzone), lowermost Kimmeridgian of the Wieluń Upland, central Poland, and their biostratigraphic and phylogenetic importance". Volumina Jurassica. XXIV: 31–52.
↑ Aiba, D. (2026). "Heterocarinella, a new ammonoid genus: Turrilitidae survived into the Santonian (Late Cretaceous) in the northwestern Pacific realm". Paleontological Research. 30: 164–173. doi:10.2517/prpsj.260014.
↑ Parent, H.; Garrido, A. C. (2026). "The Upper Tithonian–Lower Berriasian ammonite succession of Cajón de Almanza (Vaca Muerta Formation, Neuquén Basin, Argentina)". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 316 (3): 347–365. doi:10.1127/njgpa/1299.
↑ Cooper, M. R. (2024). The Evolution and Classification of the Cretaceous Ammonites and their Jurassic Progenitors. CRC Press. pp. 1–656. doi:10.1201/9781003477846. ISBN 9781003477846.
1 2 Zakharov, Y. D.; Popov, A. M.; Borisov, I. A.; Pokrovsky, V. K.; Smyshlyaeva, O. P.; Bondarenko, L. A. (2026). "The First Find of Parapopanoceras (Ammonoidea) in the Middle Triassic of South Primorye and Stratigraphic Significance of Ammonoids of the Suborder Ptychitina". Paleontological Journal. 60 (2): 131–143. doi:10.1134/S0031030126600770.
1 2 Leonova, T. B. (2026). "Characteristics of the Permian Family Paragastrioceratidae Morphogenesis (Ammonoidea)". Paleontological Journal. 60 (1): 52–63. doi:10.1134/S0031030125601252.
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↑ Sun, X.-Y.; Dai, X.; Liu, X.-K.; Jiang, S.-Y.; Song, H.-J. (2026). "A new record of late Permian (Wuchiapingian) ammonoid Stacheoceras from an exotic limestone block in the Yarlung-Zangbo Suture Zone, South Xizang (Tibet), China". Palaeoworld 201166. doi:10.1016/j.palwor.2026.201166.
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1 2 3 4 Wang, Y.; Zhan, R.-B.; Fang, Z.-J. (2026). "New Katian bivalves from the Upper Ordovician Xiazhen Formation, Jiangxi Province, China". Acta Palaeontologica Polonica. 71 (1): 133–153. doi:10.4202/app.01281.2025.
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↑ Shilekhin, L. E.; Biakov, A. S.; Vdovichenko, S. E. (2026). "Mazaevella gen. nov.—A New Genus of Pectinida (Annuliconchidae, Bivalvia) from the Gzhelian–Sakmarian of European Russia". Paleontological Journal. 59 (6): 602–609. doi:10.1134/S0031030125600969.
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↑ Cuesta, V.; Echevarria, J.; Damborenea, S. E.; Garrido, A. (2026). "Early Jurassic Opisoma (Bivalvia: Astartidae) from Argentina: avant-garde of the tropical Lithiotis fauna in the Neuquén Basin". Journal of Paleontology: 1–16. doi:10.1017/jpa.2026.10240.
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↑ Friedel, J. C.; Neubauer, T. A.; Amler, M. R. W. (2026). "A nomenclator of the Palaeozoic taxa of the family Parallelodontidae (Bivalvia, Arcida)". European Journal of Taxonomy. 1065: 1–136. doi:10.5852/ejt.2026.1065.3289.
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[CR261Columbellidae-100] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Landau, B. M.; Monsecour, K. (2026). "Neogene palaeontology in the Northern Dominican Republic. 26. The Family Columbellidae (fine) (Mollusca: Gastropoda: Buccinoidea)". Cainozoic Research. 26 (1): 15–81.

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[cowriesBergonzoni-103] 1 2 3 4 5 6 7 Bergonzoni, M. (2026). "Fossil Cowries from the Ras Madrakah Peninsula, Oman". Beautifulcowries Magazine. 12: 22–47.

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