2025 in paleomalacology

List of years in paleomalacology
… 2022 2023 2024 2025 2026 2027 2028 …
In science 2022 2023 2024 2025 2026 2027 2028 In paleontology 2022 2023 2024 2025 2026 2027 2028 In paleomammalogy 2022 2023 2024 2025 2026 2027 2028 In paleobotany 2022 2023 2024 2025 2026 2027 2028 In arthropod paleontology 2022 2023 2024 2025 2026 2027 2028 In paleoentomology 2022 2023 2024 2025 2026 2027 2028 In paleoichthyology 2022 2023 2024 2025 2026 2027 2028 In reptile paleontology 2022 2023 2024 2025 2026 2027 2028 In archosaur paleontology 2022 2023 2024 2025 2026 2027 2028
Art Archaeology Architecture Literature Music Philosophy Science +...

This list of fossil molluscs described in 2025 is a list of new taxa of fossil molluscs that were described during the year 2025, as well as other significant discoveries and events related to molluscan paleontology that occurred in 2025.

Ammonites

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Image
Itierella [1]	Gen. et sp. nov	Valid	Pictet, Hugon & Pierangelini	Early Cretaceous (Valanginian)	Grand Essert Formation	France	A member of the family Neocomitidae. The type species is I. melognensis.
Jurienella [2]	Gen. et comb. nov	Valid	Pictet & Bulot	Early Cretaceous (Hauterivian)		France    Switzerland	A member of the family Neocomitidae. The type species is "Breistrofferella" peyroulensis Atrops, Autran & Reboulet (1996).
Paradicostella [1]	Gen. et sp. nov	Valid	Pictet, Hugon & Pierangelini	Early Cretaceous (Valanginian)	Grand Essert Formation	France	A member of the family Neocomitidae. The type species is P. hautevillelompnesensis.

Ammonite research

• Đaković, Mrdak & Gawlick (2025) describe three assemblages of Anisian ammonoids from the Komarani and Bulog formations (Montenegro), including fossils of Ptychites rugifer , Megaphyllites obolus , Parakellnerites rothpletzi , Apleuroceras decrescens , Proteusites labiatus , Tropigastrites lahontanus , Proarcestes pannonicus , Proarcestes subtridentinus and Aristoptychites sp. extending known geographical ranges of these taxa. ^[3]
• Description and study on the biostratigraphy of the ammonite assemblage from the Jurassic strata from Sierra de Reyes (Mendoza Province, Argentina) is published by Riccardi, Gulisano & Gutierrez-Pleimling (2025). ^[4]
• A study on the morphology and growth of Rehmannia richei is published by Douas Bengoudira et al. (2025). ^[5]
• Cadena, Bustos & Lehmann (2025) describe bochianitid fossils from the Valanginian and Hauterivian strata of the Rosablanca Formation (Colombia), extending known range of Bochianites neocomiensis and Janenschites oosteri to the northern part of South America. ^[6]
• A study on the ontogenetic shell development of Yabeiceras orientale , Y. cf. manasoaense, Forresteria yezoensis and F. muramotoi is published by Inose & Watanabe (2025). ^[7]
• A study on shell breakages in specimens of Hoploscaphites nicolletii from the Upper Cretaceous Fox Hills Formation (South Dakota, United States), interpreted as evidence of lethal attacks by durophagous predators, is published by Tajika et al. (2025). ^[8]

Other cephalopods

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Images
Beloitoceras uuemoisense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Adila Formation	Estonia	A member of the family Oncoceratidae.
Cyrtorizoceras hariense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Oncoceratidae.
Danoceras oviforme [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Diestoceratidae.
Danoceras piersalense [9]	Comb. nov	Valid	(Teichert)	Ordovician	Moe Formation	Estonia	A member of the family Diestoceratidae; moved from "Dowlingoceras" piersalense Teichert (1930).
Danoceras vohilaidense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Adila Formation	Estonia	A member of the family Diestoceratidae.
Deckeroceras balticum [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Adila Formation	Estonia	A member of the family Uranoceratidae.
Discoceras paopense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Trocholitidae.
Dowlingoceras tornense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Adila Formation	Estonia	A member of the family Diestoceratidae.
Ephippiorthoceras vormsiense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Adila Formation	Estonia	A member of the family Proteoceratidae.
Gorbormoceras [9]	Gen. et sp. nov	Valid	Kröger	Ordovician (Katian)	Adila Formation	Estonia	A member of Actinocerida belonging to the family Ormoceratidae. The type species is G. vohilaidense.
Gorbyoceras clathratoannulatum [9]	Comb. nov	Valid	(Roemer)	Ordovician		Poland	A member of the family Proteoceratidae; moved from "Orthoceras" clathrato-annulatum Roemer (1861).
Hiiumoceras [9]	Gen. et sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Graciloceratidae. The type species is H. hiiuense.
Hosholmoceras [9]	Gen. et sp. nov	Valid	Kröger	Ordovician (Katian)	Adila Formation	Estonia	A member of the family Cyrtogomphoceratidae. The type species is H. ovalis.
Isorthoceras luhai [9]	Comb. nov	Valid	(Stumbur)	Ordovician		Estonia	A member of the family Proteoceratidae; moved from "Orthoceras" luhai Stumbur (1956).
Isorthoceras saaremense [9]	Comb. nov	Valid	(Balashov)	Ordovician		Estonia	A member of the family Proteoceratidae; moved from "Hedstroemoceras" saaremense Balashov (1959).
Kiaeroceras kaebliki [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Cyrtogomphoceratidae.
Kiaeroceras ormsoense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Cyrtogomphoceratidae.
Kiaeroceras urgense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Cyrtogomphoceratidae.
Redpathoceras saxbyense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of Ascocerida belonging to the family Probillingsitidae.
Richardsonoceras priscum [9]	Comb. nov	Valid	(Eichwald)	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Oncoceratidae; moved from "Cyrtoceras" priscum Eichwald (1860).
Rizosceras teres [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Oncoceratidae.
Saxbyoceras [9]	Gen. et sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Apsidoceratidae. The type species is S. kingpooli.
Schuchertoceras deformis [9]	Comb. nov	Valid	(Eichwald)	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Ascoceratidae; moved from "Ascoceras" deforme Eichwald (1860).
Strandoceras kalevipoegi [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Cyrtogomphoceratidae.
Strandoceras kohilense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Cyrtogomphoceratidae.
Strandoceras muhvi [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Kõrgessaare Formation	Estonia	A member of the family Cyrtogomphoceratidae.
Strandoceras sulevipoegi [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)		Estonia	A member of the family Cyrtogomphoceratidae.
Striatocycloceras hosholmense [9]	Sp. nov	Valid	Kröger	Ordovician (Katian)	Adila Formation	Estonia	A member of the family Orthoceratidae.
Wennanoceras remotum [10]	Sp. nov		Song et al.	Ordovician		China
Wutinoceras multiseptum [10]	Sp. nov		Song et al.	Ordovician		China	A member of Actinocerida belonging to the family Wutinoceratidae.
Xiaohenautilus chatelaini [11]	Sp. nov	Valid	Jenks et al.	Early Triassic	Dinwoody Formation	United States (  Nevada)	A member of the family Grypoceratidae.

Bivalves

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Images
Streblochondria dalianensis [12]	Sp. nov		Han et al.		Taiyuan Formation	China	A member of Pectinida belonging to the family Streblochondriidae.

Gastropods

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Images
Admete trigostomoides [13]	Sp. nov	Valid	Bouchard et al.	Pleistocene (Gelasian)		France	A species of Admete .
Alvania selsoifensis [13]	Sp. nov	Valid	Bouchard et al.	Pleistocene (Gelasian)		France	A species of Alvania .
Calliostoma normanensis [13]	Sp. nov	Valid	Bouchard et al.	Pleistocene (Gelasian)		France	A species of Calliostoma .
Ceratostoma? steiningeri [14]	Sp. nov	Valid	Harzhauser, Landau & Merle	Miocene	Gauderndorf Formation	Austria	Possibly a species of Ceratostoma .
Crassimurex (Eopaziella) zoltani [14]	Sp. nov	Valid	Harzhauser, Landau & Merle	Miocene	Dej Formation	Romania	A species of Crassimurex .
Haliotis plioetrusca [15]	Sp. nov	Valid	Dominici et al.	Pliocene		Italy	A species of Haliotis .
Kestocenebra vermeiji [14]	Sp. nov	Valid	Harzhauser, Landau & Merle	Miocene	Grund Formation	Austria   Czech Republic	A member of the family Muricidae.
Ocenebra breitenbergeri [14]	Sp. nov	Valid	Harzhauser, Landau & Merle	Miocene	Tırtar Formation	Turkey	A species of Ocenebra .
Ocenebra littoralis [14]	Nom. nov	Valid	Harzhauser, Landau & Merle	Miocene	Loibersdorf Formation	Austria	A species of Ocenebra; a replacement name for Murex (Ocinebrina) erinaceus sublaevis Schaffer (1912).
Ocenebra scorpio [14]	Sp. nov	Valid	Harzhauser, Landau & Merle	Miocene	Grund Formation	Austria	A species of Ocenebra.
Ocinebrina bellissima [14]	Sp. nov	Valid	Harzhauser, Landau & Merle	Miocene	Dej Formation	Romania	A species of Ocinebrina .
Ocinebrina s.l. praescalaris [14]	Sp. nov	Valid	Harzhauser, Landau & Merle	Miocene	Baden Formation	Austria   Czech Republic	A member of the family Muricidae.
Ocinebrinopsis [14]	Gen. et comb. et 4 sp. nov	Valid	Harzhauser, Landau & Merle	Miocene		Austria   Bosnia and Herzegovina   Bulgaria   Czech Republic   France   Hungary   Italy   Moldova   Poland   Romania   Slovakia   Turkey   Ukraine	A member of the family Muricidae. The type species is "Ocenebra" orientalis Friedberg (1928); genus also includes "Ocinebrina" bertai Kovács (2020), "Murex" crassilabiatus Hilber (1879), "Murex (Occenebra)" credneri Hoernes & Auinger (1885), "Ocinebrina" deaki Kovács, Leél-Őssy & Vicián (2023), "Murex (Occenebra) sublavatus" var. grundensis Hoernes & Auinger (1885; raised to the rank of the species O. grundensis), "Tritonium" striatum Eichwald (1830), "Pollia" weinsteigensis Hoernes & Auinger (1890), "Fusus" coelatus (Dujardini, 1837) and "Murex" dertonensis Bellardi (1873), as well as new species O. aperta, O. dominicii, O. gregaria and O. subnuda.
Pterynopsis guzhovi [14]	Nom. nov	Valid	Harzhauser, Landau & Merle	Miocene		Ukraine	A species of Pterynopsis ; a replacement name for Murex affinis Eichwald (1830).
Seila quinquecarinata [13]	Sp. nov	Valid	Bouchard et al.	Pleistocene (Gelasian)		France	A species of Seila .
Timbellus kovacsi [14]	Sp. nov	Valid	Harzhauser, Landau & Merle	Miocene		Czech Republic   Romania	A species of Timbellus .
Timbellus weinmannae [14]	Sp. nov	Valid	Harzhauser, Landau & Merle	Miocene	Dej Formation	Austria   Italy   Romania	A species of Timbellus.

Gastropod research

• A study on the evolution of the columellar folds in gastropods, based on data from extant and fossil taxa, is published by Vermeij (2025). ^[16]
• A study on the diversity of Permian and Triassic gastropods is published by Dominici (2025), who interprets increase of diversity of carnivorous gastropods during the Middle-Late Triassic transition as related to evolution of reef ecosystems at the same time. ^[17]

Other molluscs

Name	Novelty	Status	Authors	Age	Type locality	Location	Notes	Images
Emo [18]	Gen. et sp. nov	Valid	Sutton et al.	Silurian	Coalbrookdale Formation	United Kingdom	An early aculiferan related to heloplacids. The type species is E. vorticaudum.
Punk [18]	Gen. et sp. nov	Valid	Sutton et al.	Silurian	Coalbrookdale Formation	United Kingdom	An early aculiferan related to modern aplacophorans. The type species is P. ferox.

Other molluscan research

• Redescription of the rostroconch species Hoarepora parrishi , based on data from new fossil material from the Moscovian Korobcheevo Formation (Ryazan Oblast, Russia) and Gzhelian Amerevo Formation (Moscow Oblast, Russia) that extends known geographical range of the species, is published by Mazaev (2025). ^[19]

General research

• Evidence from the study of the fossil record of Early Jurassic gastropods and bivalves from the epicontinental seas of the north-western Tethys Ocean, indicative of a relationship between the thermal suitability of the studied animals and changes of their occupancy in response to climate changes during the Pliensbachian and Toarcian, is presented by Reddin et al. (2025). ^[20]
• Description of the assemblage of ammonites and inoceramid bivalves from the Albian strata from the Mangyshlak Anticlinorium (Kazakhstan) is published by Kennedy & Walaszczyk (2025). ^[21]

References

1. Pictet, A.; Hugon, B.; Pierangelini, G. (2025). "Itierella melognensis n.gen., n.sp., and Paradicostella hautevillelompnesensis n.gen., n.sp. (Ammonoidea, Neocomitidae, Neocomitinae), two new upper Valanginian trituberculated ammonoids from the Jura Mountains, eastern France". Carnets Geol. 25 (3): 73–87. doi: 10.2110/carnets.2025.2503 .
2. Pictet, A.; Bulot, L. C. (2025). "New or poorly known Neocomitidae (Ammonitina, Ammonoida) from the lower Hauterivian sedimentary series of the Jura platform and the Vocontian trough (France and Switzerland)". Swiss Journal of Palaeontology. 144. 7. doi: 10.1186/s13358-024-00343-4 .
3. Đaković, M.; Mrdak, M.; Gawlick, H.-J. (2025). "Pelsonian and Illyrian (Anisian, Middle Triassic) ammonoid faunas from the Bulog Group of Kovčezi, Durmitor Mountain, Dinarides (northern Montenegro)". Austrian Journal of Earth Sciences. 118 (1): 1–40. doi: 10.17738/ajes.2025.0001 .
4. Riccardi, A. C.; Gulisano, C.; Gutierrez-Pleimling, A. (2025). "Ammonite fauna and biostratigraphy of the Jurassic in Sierra de Reyes (Mendoza, Argentina)". Revue de Paléobiologie, Genève. 44 (4): 1–32. doi:10.5281/zenodo.14793686.
5. Douas Bengoudira, F.; Touahria, A.; Bakhti, A.; Sebane, A. (2025). "New information on the ammonite Rehmannia (Loczyceras) richeï (Flamand, 1911) from the Middle Jurassic of Algeria (Saïda, North-West Algeria)". Revue de Paléobiologie, Genève. 44 (3): 1–9. doi:10.5281/zenodo.14793579.
6. Cadena, E.-A.; Bustos, J.; Lehmann, J. (2025). "Valanginian and Hauterivian bochianitid ammonoids from the Rosa Blanca Formation of Colombia: palaeobiogeographic implications". Cretaceous Research. 106094. doi: 10.1016/j.cretres.2025.106094 .
7. Inose, H.; Watanabe, N. (2025). "Ontogeny and Variation of Four Species of Upper Cretaceous Barroisiceratine Ammonoids Yabeiceras and Forresteria by Means of X-ray Microcomputed Tomography". Paleontological Research. 29 (1): 24–43. doi: 10.2517/prpsj.240003 .
8. Tajika, A.; Rashkova, A.; Landman, N. H.; Klompmaker, A. A. (2025). "Lethal injuries on the scaphitid ammonoid Hoploscaphites nicolletii (Morton, 1842) in the Upper Cretaceous Fox Hills Formation, South Dakota, USA". Swiss Journal of Palaeontology. 144. 1. doi: 10.1186/s13358-024-00341-6 .
9. Kröger, B. (2025). "The Lyckholm acme of cephalopods – Review of the late Katian (Vormsi–Pirgu regional stages) Ordovician cephalopods of Estonia". European Journal of Taxonomy. 978: 1–169. doi: 10.5852/ejt.2025.978.2801 .
10. Song, J.; Fang, X.; Li, W.; Wang, W.; Burrett, C.; Yu, S.; Qie, W.; Zhang, Y. (2025). "New cephalopod material of Middle to Upper Ordovician from southern Xizang (Tibet), China: Taxonomy, diversity and palaeobiogeography". Palaeogeography, Palaeoclimatology, Palaeoecology. 112744. doi:10.1016/j.palaeo.2025.112744.
11. Jenks, J. F.; Maekawa, T.; Shigeta, Y.; Ware, D.; Brayard, A.; Bylund, K. G.; Stephen, D. A.; Kittrick, N. (2025). "Early Dienerian ammonoids and nautiloids and a new late Griesbachian ammonoid site from the Dinwoody Formation (Thaynes Group) at Crittenden Springs, Elko County, Nevada" (PDF). New Mexico Museum of Natural History and Science Bulletin. 97: 1–29.
12. Han, Y.; Li, W.; Tang, M.; Li, Q.; Zhang, X.; Tian, Y. (2025). "The late Carboniferous to Permian bivalves from the Fuzhouwan area (Liaoning, Dalian), Taiyuan Formation: a redescription and a new species of Streblochondria (Mollusca, Bivalvia, Pectinida)". Historical Biology: An International Journal of Paleobiology. doi:10.1080/08912963.2025.2458133.
13. Bouchard, B.; Wesselingh, F. P.; Pouwer, R.; Landau, B. (2025). "The Gelasian gastropod fauna of Selsoif (Manche, France)". Geodiversitas. 47 (3): 39–91. doi:10.5252/geodiversitas2025v47a3.
14. Harzhauser, M.; Landau, B. M.; Merle, D. (2025). "The Muricidae (Gastropoda, Muricoidea) of the Miocene Central Paratethys Sea (Haustrinae, Muricinae, Ocenebrinae, Pagodulinae, Typhinae, Muricidae incertae sedis)". Zootaxa. 5572 (1): 1–162. doi:10.11646/zootaxa.5572.1.1.
15. Dominici, S.; Forli, M.; Brunetti, M. M.; Taviani, M. (2025). "Fossil abalones of Europe and their relationships with modern Haliotis (Haliotidae, Gastropoda): a multivariate analysis". Journal of Paleontology: 1–32. doi: 10.1017/jpa.2024.50 .
16. Vermeij, G. J. (2025). "Repeated evolution: the case of columellar folds in gastropods". Zoological Journal of the Linnean Society. 203 (1). zlae164. doi:10.1093/zoolinnean/zlae164.
17. Dominici, S. (2025). "The Revolution of Small Snails and the Early Modern Evolutionary Fauna". Diversity. 17 (2). 120. doi: 10.3390/d17020120 .
18. Sutton, M. D.; Sigwart, J. D.; Briggs, D. E. G.; Gueriau, P.; King, A.; Siveter, D. J.; Siveter, D. J. (2025). "New Silurian aculiferan fossils reveal complex early history of Mollusca". Nature. 637 (8046): 631–636. doi: 10.1038/s41586-024-08312-0 . PMC   11735398 . PMID   39779843.
19. Mazaev, A. V. (2025). "The first records of bransoniid rostroconchs (Bransoniidae, Rostroconchia, Mollusca) in the Pennsylvanian of the Russian Platform". Ruthenica, Russian Malacological Journal. 35 (1): 21–30. doi:10.35885/ruthenica.2025.35(1).2.
20. Reddin, C. J.; Landwehrs, J. P.; Mathes, G. H.; Ullmann, C. V.; Feulner, G.; Aberhan, M. (2025). "Marine species and assemblage change foreshadowed by their thermal bias over Early Jurassic warming". Nature Communications. 16 (1). 1370. doi: 10.1038/s41467-025-56589-0 . PMC   11799210 . PMID   39910097.
21. Kennedy, W. J.; Walaszczyk, I. (2025). "Ammonites and inoceramids of the Middle–Upper Albian of Mangyshlak (western Kazakhstan); systematics, biostratigraphy and biogeography". Acta Geologica Polonica. 75 (1). e37. doi: 10.24425/agp.2024.152654 .