2020 in paleomalacology

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This list 2020 in paleo malacology is a list of new taxa of ammonites and other fossil cephalopods, as well as fossil gastropods, bivalves and other molluscs that are scheduled to be described during the year 2020, as well as other significant discoveries and events related to molluscan paleontology that are scheduled to occur in the year 2020.

Ammonites

New taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Aulacostephanus camericensis[1]	Sp. nov	In press	Cope & Etches	Late Jurassic (Kimmeridgian)		United Kingdom
Baidites obesus[2]	Sp. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia
Borissjakoceras falcatum[3]	Sp. nov	In press	Kennedy	Late Cretaceous (Cenomanian)		Tunisia	A member of the family Binneyitidae.
Carthaginites elegans[3]	Sp. nov	In press	Kennedy	Late Cretaceous (Cenomanian)		Algeria	A member of the family Turrilitidae.
Churkites warei[2]	Sp. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia
Collignoniceras badilleti[4]	Sp. nov	Valid	Amédro & Châtelier in Amédro et al.	Late Cretaceous (Turonian)		France
Collignoniceras hourqueigi[4]	Sp. nov	Valid	Amédro & Châtelier in Amédro et al.	Late Cretaceous (Turonian)		France
Collignoniceras vigennum[4]	Sp. nov	Valid	Amédro & Châtelier in Amédro et al.	Late Cretaceous (Turonian)		France
Conlinites evolutum[3]	Sp. nov	In press	Kennedy	Early Cretaceous (Albian)		Algeria	A member of the family Brancoceratidae.
Coquandiceras[3]	Gen. et comb. nov	In press	Kennedy	Late Cretaceous (Cenomanian)		Algeria Tunisia	A member of the family Acanthoceratidae belonging to the subfamily Mantelliceratinae. The type species is "Ammonites" jubae Coquand (1880); genus also includes "Ammonites" villei Coquand (1862).
Cryptoturrilites[3]	Gen. et sp. nov	In press	Kennedy	Late Cretaceous (Cenomanian)		Tunisia	A member of the family Turrilitidae. The type species is C. tenuicostatus.
Flemingites lidakensis[2]	Sp. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia
Graysonites elegans[3]	Sp. nov	In press	Kennedy	Late Cretaceous (Cenomanian)		Algeria	A member of the family Acanthoceratidae.
Gregoryceras boreale[5]	Sp. nov	Valid	Mitta & Stupachenko	Late Jurassic (Oxfordian)		Russia	A member of the family Aspidoceratidae.
Homeomorphites[6]	Gen. et sp. et comb. nov	In press	Bert, Bersac & Canut	Early Cretaceous (Hauterivian to Barremian)		Argentina Chile	A member of the family Neocomitidae. The type species is H. aguirreurretae; genus also includes H. ploszkiewiczi (Riccardi and Aguirre-Urreta, 1989) and H. varicostatus (Riccardi and Aguirre-Urreta, 1989).
Homoceratoides wangchengi[7]	Sp. nov	In press	Korn & Wang in Korn et al.	Carboniferous (Bashkirian)		China
Howarthiceras[8]	Gen. et comb. nov	In press	Zakharov & Rogov	Upper Jurassic (Tithonian)		United States ( California)	A new genus for "Groebericeras" baylei Imlay & Jones.
Hypowaagenia[9]	Gen. et sp. nov	Valid	Schweigert & Schlampp	Late Jurassic (Kimmeridgian)	Arzberg Formation	Germany Pakistan?	A member of the family Aspidoceratidae. The type species is H. endressi; genus might also include "Aspidoceras" acanthomphalum Zittel (1870).
Lenicostites[6]	Gen. et comb. nov	In press	Bert, Bersac & Canut	Early Cretaceous (Barremian)		France	A member of Ancyloceratoidea belonging to the new family Lenicostitidae. The type species is "Hemihoplites" rusticus Vermeulen (1996).
Litophragmatoceras curiosus[3]	Sp. nov	In press	Kennedy	Late Cretaceous (Cenomanian)		Algeria	A member of the family Flickiidae.
Neophlycticeras algeriense[3]	Sp. nov	In press	Kennedy	Late Cretaceous (Cenomanian)		Algeria	A member of the family Lyelliceratidae.
Neotelodactylites[10]	Gen. et comb. nov	Valid	Jattiot, Gris & Trincal	Early Jurassic (Toarcian)		France Italy	A new genus for "Peronoceras" eucosmum Lippi Boncambi (1947).
Paraspidites bicarinatus[2]	Sp. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia
Protacanthoceras sottaraense[3]	Sp. nov	In press	Kennedy	Late Cretaceous (Cenomanian)		Algeria	A member of the family Acanthoceratidae.
Ptychites embreei[11]	Sp. nov	Valid	Bischof & Lehmann	Middle Triassic (Anisian)	Favret Formation	United States ( Nevada)
Romaniceras (Romaniceras) marigniacum[4]	Sp. nov	Valid	Amédro & Châtelier in Amédro et al.	Late Cretaceous (Turonian)		France
Roopnarinites[2]	Gen. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia
Scaphites occlusus[3]	Sp. nov	In press	Kennedy	Late Cretaceous (Cenomanian)		Algeria Tunisia	A member of the family Scaphitidae.
Stoliczkaia (Stoliczkaia) djerissaensis[3]	Sp. nov	In press	Kennedy	Early Cretaceous (Albian)		Tunisia	A member of the family Lyelliceratidae.
Subflemingites bihatiense[2]	Sp. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia

General research

A study aiming to determine the drag force experienced by a wide range of ammonite shell shapes is published by Hebdon, Ritterbush & Choi (2020).[12]
A study on the abundance and size distribution of small specimens of Baculites and Hoploscaphites at eight cold methane seep sites in the Upper Cretaceous Pierre Shale (South Dakota, United States) is published by Rowe et al. (2020), who interpret their findings as indicating that newly hatched ammonites lived in close proximity to seep fluids emerging at the sediment-water interface and the associated microbial food web.[13]
A study on changes of hydrostatic properties of three species of Didymoceras during their ontogeny is published by Peterman et al. (2020).[14]

Other cephalopods

New taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes	Images
Tafadnatoceras[15]	Gen. et sp. nov	In press	Ebbestad et al.	Late Ordovician	Upper Tiouririne Formation	Morocco	A member of Orthocerida belonging to the family Stereoplasmoceratidae. The type species is T. tiouririnense.
Wadema tattai[15]	Sp. nov	In press	Ebbestad et al.	Late Ordovician	Upper Ktaoua Formation	Morocco	A member of Actinocerida belonging to the family Wademidae.

General research

A study aiming to determine whether the development of chamber volume in fossil cephalopod phragmocones conveys information about their physiology is published by Tajika et al. (2020), who evaluate the implications of their findings for the knowledge of the ecology and extinction selectivity of fossil cephalopods.[16]
A study on the spatial distribution of Givetian oncocerid fossils from the Hamar Laghdad ridge (eastern Anti-Atlas, Morocco), evaluating its implications for the knowledge of the life cycle of these cephalopods, is published by Pohle et al. (2020).[17]
A study on the reproductive strategies of fossil coleoids, based on data from shells of belemnoids, spirulids and sepiids, is published by Fuchs et al. (2020).[18]
A specimen of Plesioteuthis preserved with an associated tooth of a pterosaur is reported from the Upper Jurassic Altmühltal Formation (Germany) by Hoffmann et al. (2020), who evaluate the implications of this finding for the knowledge of the likely habitat of Plesioteuthis.[19]

Gastropods

New taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Allossospira[15]	Gen. et comb. nov	In press	Ebbestad et al.	Late Ordovician	Upper Ktaoua Formation	Morocco	A member of the family Gosseletinidae belonging to the subfamily Euryzoninae. The type species is "Lophospira" debganensis Horný (1997).
Altotomaria[20]	Gen. et sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand	Genus includes new species A. reticulata.
Apachella thailandensis[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Assiminea striatura[21]	Sp. nov	Valid	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	A species of Assiminea.
Balticopta[22]	Gen. et sp. nov	Valid	Balashov & Perkovsky	Eocene (Priabonian)	Baltic amber	Russia ( Kaliningrad Oblast)	A member of the family Gastrocoptidae. The type species is B. gusakovi.
Bania goehlichae[23]	Sp. nov	Valid	Mandic, Harzhauser & Neubauer	Middle Miocene		Bosnia and Herzegovina
Bellerophon erawanensis[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Biarmeaspira mazaevi[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Calculocochlea[24]	Gen. et sp. nov	In press	Juárez-Ruiz, Matamales-Andreu & Kadolsky	Early Oligocene		Spain	A member of the family Vidaliellidae. Genus includes new species C. oliveri.
Cheilospicata cedrus[25]	Sp. nov	Valid	Garvie in Garvie, Goedert & Janssen			United States
Clanculus (Clanculopsis) krachi[26]	Sp. nov	In press	Nosowska	Middle Miocene		Poland Ukraine	A species of Clanculus.
Clio gailae[25]	Sp. nov	Valid	Goedert & Janssen in Garvie, Goedert & Janssen			United States ( Washington)	A species of Clio.
Currylimacina asperita[25]	Sp. nov	Valid	Garvie in Garvie, Goedert & Janssen			United States
Eotrichophorus[21]	Gen. et sp. nov	Valid	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	Genus includes new species E. kachin.
Fusulculus hanseni[27]	Nom. nov	Valid	Pacaud	Early Paleocene		Denmark	A species of Fusulculus; a replacement name for Epalxis ? rosenkrantzi Hansen (2019).
Gosseletina microstriata[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Heliconoides hodgkinsoni[25]	Sp. nov	Valid	Garvie in Garvie, Goedert & Janssen			United States
Heterosubulites longusapertura[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Incisilabium trochiformis[28]	Sp. nov	Valid	Lozouet, Cahuzac & Charles	Eocene (Priabonian)		France	A member of the family Modulidae.
Katosira ? bicarinata[29]	Sp. nov	Valid	Ferrari, Little & Atkinson	Early Jurassic (Toarcian)	Blea Wyke Sandstone Formation	United Kingdom	A member of the family Zygopleuridae.
Limacina parvabrazensis[25]	Sp. nov	Valid	Garvie & Janssen in Garvie, Goedert & Janssen			United States	A species of Limacina.
Limacina pseudopygmaea[25]	Sp. nov	Valid	Garvie & Janssen in Garvie, Goedert & Janssen			United States	A species of Limacina.
Limacina texanopsis[25]	Sp. nov	Valid	Garvie in Garvie, Goedert & Janssen			United States	A species of Limacina.
Limacina yadongensis[30]	Sp. nov	Valid	Li et al.	Early Eocene	Zhepure Formation	China	A species of Limacina.
Lophospira latilabra[15]	Sp. nov	In press	Ebbestad et al.	Late Ordovician	Upper Ktaoua Formation	Morocco	A member of the family Lophospiridae.
Loriolotrema[31]	Gen. et sp. nov	Valid	Gründel, Hostettler & Menkveld-Gfeller	Jurassic		Europe	A member of the family Brachytrematidae. Genus includes new species L. liriola.
Lozouetina naonedosca[32]	Sp. nov	Valid	Pacaud & Gómez	Eocene (Bartonian)		France Spain	A member of the family Ovulidae belonging to the subfamily Pediculariinae.
Macropupina[21]	Gen. et sp. nov	Valid	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	Genus includes new species M. electricus.
Modulus benoisti[28]	Sp. nov	Valid	Lozouet, Cahuzac & Charles	Miocene (Serravallian)		France	A species of Modulus.
Niveria ledoni[33]	Sp. nov	Valid	Fehse & Vicián	Late Miocene		France	A species of Niveria.
Niveria miocarinata[33]	Sp. nov	Valid	Fehse & Vicián	Late Miocene		France	A species of Niveria.
Paleodiplommatina[21]	Gen. et sp. nov	Valid	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	Genus includes new species P. spelomphalos.
Perissocyclos[21]	Gen. et sp. nov	Valid	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	Genus includes new species P. kyrtostoma.
Peruvispira brasilensis[34]	Sp. nov	In press	Simões et al.	Late Paleozoic	Taciba Formation	Brazil
Platyzona gradata[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Profundimitra lacuiensis[35]	Nom. nov	In press	Nielsen & Ampuero	Early Miocene		Chile	A species of Profundimitra; a replacement name for Mitra martini Philippi (1887).
Prososthenia krijgsmani[23]	Sp. nov	Valid	Mandic, Harzhauser & Neubauer	Middle Miocene		Bosnia and Herzegovina
Prososthenia milosevici[36]	Sp. nov	Valid	Neubauer et al.	Miocene		Serbia	A member of the family Hydrobiidae belonging to the subfamily Pyrgulinae.
Prososthenia? naissensis[36]	Sp. nov	Valid	Neubauer et al.	Miocene		Serbia	A member of the family Hydrobiidae belonging to the subfamily Pyrgulinae.
Prososthenia rundici[36]	Sp. nov	Valid	Neubauer et al.	Miocene		Serbia	A member of the family Hydrobiidae belonging to the subfamily Pyrgulinae.
Radvanospira[15]	Gen. et comb. et sp. nov	In press	Ebbestad et al.	Late Ordovician		Czech Republic Morocco Spain	A member of the family Platyceratidae. The type species is "Naticopsis" antiquata Barrande in Perner (1903); genus also includes new species R. baniensis.
Scissurella nesbittae[37]	Sp. nov	Valid	Geiger & Goedert	Eocene or Oligocene (latest Priabonian or earliest Rupelian)	Gries Ranch Formation	United States ( Washington)	A species of Scissurella.
Scutus mirus[38]	Sp. nov	In press	Gard	Late Oligocene to early Miocene		New Zealand	A species of Scutus.
Selvovum[24]	Gen. et comb. nov	In press	Juárez-Ruiz, Matamales-Andreu & Kadolsky	Late Eocene		Spain	A member of the family Vidaliellidae; a new genus for "Ampullaria" selvensis.
Stephaniphera[39]	Gen. et sp. nov	Valid	Schneider, Kollmann & Pickford	Late Cretaceous	Al-Khodh Formation	Oman	A member of Cerithioidea belonging to the family Hemisinidae. The type species is S. coronata.
Strebloceras kobayashii[40]	Sp. nov	Valid	Haga	Middle Pleistocene	Toyohashi Formation	Japan	A member of the family Caecidae.
Streptacis? khaokhadensis[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Striactaenonina elegans[29]	Sp. nov	Valid	Ferrari, Little & Atkinson	Early Jurassic (Toarcian)	Blea Wyke Sandstone Formation	United Kingdom	A member of Architectibranchia belonging to the family Tubiferidae.
Subtemenia[39]	Gen. et comb. nov	Valid	Schneider, Kollmann & Pickford	Late Cretaceous	Al-Khodh Formation	Iran Oman	A member of the family Pseudomelaniidae. The type species is "Paryphostoma" morgani Douvillé (1904).
Trachydomia suwanneeae[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Trachyspira eleganta[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Triptychia tomerdingensis[41]	Sp. nov	Valid	Kadolsky	Miocene (Aquitanian)		Germany	A member of the family Filholiidae.
Tritonophon grandis[15]	Sp. nov	In press	Ebbestad et al.	Late Ordovician	Lower Second Bani Formation	Morocco	A member of the family Bellerophontidae.
Trochomodulus stampinicus[28]	Sp. nov	Valid	Lozouet, Cahuzac & Charles	Oligocene (Rupelian)		France	A member of the family Modulidae.
Truncatellina dilatatus[42]	Sp. nov	Valid	Yu	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	A species of Truncatellina.
Trypanocochlea lopburiensis[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Turbo histrioides[43]	Sp. nov	Valid	Kase et al.	Miocene		Japan	A species of Turbo.
Turbo izuensis[43]	Sp. nov	Valid	Kase et al.	Miocene		Japan	A species of Turbo.
Turritelloidea stepheni[29]	Sp. nov	Valid	Ferrari, Little & Atkinson	Early Jurassic (Toarcian)	Blea Wyke Sandstone Formation	United Kingdom	A member of the family Gordenellidae.
Umbilia darryli[44]	Sp. nov	Valid	Hawke	Miocene		Australia	A species of Umbilia.
Umbilia hallani[44]	Sp. nov	Valid	Hawke	Miocene		Australia	A species of Umbilia.
Worthenia humiligrada[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Xenostoma[21]	Gen. et sp. nov	Valid	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	Genus includes new species X. lophopleura.
Yunnania inflata[20]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand

Bivalves

New taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Adelfia[45]	Gen. et comb. et sp. nov	Valid	Alvarez & Río	Eocene	La Meseta Formation Loreto Formation Submeseta Formation	Antarctica Chile	A member of the family Veneridae. The type species is "Eumarcia" austrolissa Stilwell & Zinsmeister (1992); genus also includes "Venus" arenosa Ortmann (1899), as well as new species A. omega.
Cratonaia[46]	Gen. et sp. nov	Valid	Da Silva et al.	Early Cretaceous (Aptian)	Crato Formation	Brazil	A bivalve belonging to the order Unionida and to the group Silesunionoidea. Genus includes new species C. novaolindensis.
Eothyasira[47]	Gen. nov	In press	Karapunar et al.	Early Jurassic (Pliensbachian)		Germany
Geloina amithoscutana[39]	Sp. nov	Valid	Schneider, Kollmann & Pickford	Late Cretaceous	Al-Khodh Formation	Oman	A member of the family Cyrenidae.
Gyrostrea bogdanovae[48]	Sp. nov	Valid	Kosenko & Metelkin	Early Cretaceous (Hauterivian–Barremian)	Kugusem Formation	Kazakhstan	An oyster.
Illyricocongeria forcakovici[23]	Sp. nov	Valid	Mandic, Harzhauser & Neubauer	Middle Miocene		Bosnia and Herzegovina
Limopsis quenstedti[47]	Nom. nov	In press	Karapunar et al.				A replacement name for Nucula aurita Quenstedt (1856).
Lyropecten terrysmithae[49]	Sp. nov	Valid	Powell, Millard & Garcia	Miocene	Monterey Formation Santa Margarita Sandstone	United States ( California)	A scallop.
Malletia tsubetsuensis[50]	Sp. nov	Valid	Matsubara in Matsubara et al.	Miocene (Aquitanian)	Tsubetsu Formation	Japan	A member of the family Malletiidae
Marciachlys[45]	Gen. et comb. nov	Valid	Alvarez & Río	Eocene	Submeseta Formation	Antarctica	A member of the family Veneridae. The type species is "Eurhomalea" inflata Zinsmeister (1984).
Monopleura alesta[51]	Sp. nov	Valid	Masse & Fenerci-Masse	Early Cretaceous (Barremian)		France	A rudist bivalve.
Monopleura jurensis[51]	Sp. nov	Valid	Masse & Fenerci-Masse	Early Cretaceous (Hauterivian)		France	A rudist bivalve.
Muscatella[39]	Gen. et sp. nov	Valid	Schneider, Kollmann & Pickford	Late Cretaceous	Al-Khodh Formation	Oman	A member of the family Cyrenidae. The type species is M. biszczukae.
Myonera inouei[52]	Sp. nov	Valid	Amano in Amano & Kurita	Paleocene (Selandian)	Tomikawa Formation	Japan	A member of the family Cuspidariidae.
Myonia aparicioi[53]	Sp. nov	In press	Díaz Saravia & González	Carboniferous (Pennsylvanian)	Santa Elena Formation	Argentina
Nanogyra brevisulcata[54]	Sp. nov	Valid	Toscano & Lazo	Early Cretaceous	Neuquén Basin	Argentina	A bivalve belonging to the family Gryphaeidae.
Nicaniella schoberti[47]	Sp. nov	In press	Karapunar et al.	Early Jurassic (Pliensbachian)		Germany
Oesterheldia[55]	Gen. et sp. nov	Valid	Pérez & Giachetti	Late Oligocene – early Miocene		Argentina	A member of the family Carditidae. The type species is "Venericardia" cannada Ihering (1907); genus also includes "Cyclocardia" dalek Pérez & del Río (2017).
Palaeomutela australis[56]	Sp. nov	In press	Guerrini et al.	Permian	Rio do Rasto Formation	Brazil	A bivalve belonging to the group Actinodontida and the family Palaeomutelidae.
Paracuspidaria[47]	Gen. nov	In press	Karapunar et al.	Early Jurassic (Pliensbachian)		Germany
Permophorus? yrigoyeni[53]	Sp. nov	In press	Díaz Saravia & González	Carboniferous (Pennsylvanian)	Santa Elena Formation	Argentina
Praenucula pojetai[15]	Sp. nov	In press	Ebbestad et al.	Late Ordovician		Morocco	A bivalve belonging to the family Praenuculidae.
Pratulum kurrawchipellu[57]	Sp. nov	In press	Rojas & Nielsen	Early Miocene	Ipún Beds	Chile	A species of Pratulum.
Pratulum terpoorteni[57]	Sp. nov	In press	Rojas & Nielsen	Early Miocene	Navidad Formation	Chile	A species of Pratulum.
Promytilus rochacamposi[53]	Sp. nov	In press	Díaz Saravia & González	Carboniferous (Pennsylvanian)	Santa Elena Formation	Argentina
Relogiincola[56]	Gen. et sp. nov	In press	Guerrini et al.	Permian	Rio do Rasto Formation	Brazil	A bivalve belonging to the group Edmondioidea and the family Pachydomidae. Genus includes new species R. delicata.
Rollieria franconica[47]	Sp. nov	In press	Karapunar et al.	Early Jurassic (Pliensbachian)		Germany
Rollieria goldfussi[47]	Nom. nov	In press	Karapunar et al.				A replacement name for Nucula subovalis Goldfuss (1837).
Shajia[58]	Gen. et sp. nov	Valid	Rao et al.	Early Cretaceous (Aptian or Albian)	Langshan Formation	China India	A rudist bivalve. Genus includes new species S. tibetica.
Terraia decarinata[56]	Sp. nov	In press	Guerrini et al.	Permian	Rio do Rasto Formation	Brazil	A bivalve belonging to the family Astartidae.
Trigonipraxis madjerensis[36]	Sp. nov	Valid	Neubauer et al.	Miocene		Serbia	A member of the family Dreissenidae belonging to the subfamily Congeriinae.

Other mollusks

New taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Acanthochitona interglacialis[59]	Sp. nov	Valid	Dell'Angelo et al.	Late Pleistocene		Saudi Arabia	A chiton, a species of Acanthochitona.
Apoptopegma joyceae[60]	Sp. nov	Valid	Smith, Brock & Paterson	Cambrian (Guzhangian)	Shannon Formation	Australia	A rostroconch.
Lucilina aqabaensis[59]	Sp. nov	Valid	Dell'Angelo et al.	Late Pleistocene		Saudi Arabia	A chiton, a species of Lucilina.
Qaleruaqia[61]	Gen. et sp. nov	Valid	Peel	Cambrian Stage 4	Aftenstjernesø Formation	Greenland	A member of the family Mattheviidae. The type species is Q. sodermanorum.

Research

New specimens of Pelagiella exigua with associated impressions of two clusters of chaetae, providing new information on the anatomy of this taxon, are described from the Cambrian Kinzers Formation (Pennsylvania, United States) by Thomas, Runnegar & Matt (2020), who infer the occurrence of a pair of chaeta-bearing appendages extending from the anterior body wall or foot of the animal (unique among living and extinct molluscs), and interpret Pelagiella as the earliest known stem gastropod.[62]

References

John C.W. Cope; Stephen M. Etches (2020). "Subdivision of the Kimmeridgian Autissiodorensis Zone (Upper Jurassic, UK)". Proceedings of the Geologists' Association. in press. doi:10.1016/j.pgeola.2020.03.006.
Romain Jattiot; Hugo Bucher; Arnaud Brayard (2020). "Smithian (Early Triassic) ammonoid faunas from Timor: taxonomy and biochronology". Palaeontographica Abteilung A. 317 (1–6): 1–137. doi:10.1127/pala/2020/0096.
William James Kennedy (2020). "Upper Albian, Cenomanian and Upper Turonian ammonite faunas from the Fahdène Formation of Central Tunisia and correlatives in northern Algeria". Acta Geologica Polonica. 70. doi:10.24425/agp.2019.126459.
Francis Amédro; Francis Robaszynski; Hervé Châtelier; Patrice Ferchaud; Bertrand Matrion (2020). "Identification d'un biohorizon d'ammonites à Romaniceras (Romaniceras) marigniacum sp. nov. (Turonien moyen) à la base du Tuffeau Jaune de Touraine (France)". Carnets de Géologie. 20 (4): 37–89. doi:10.4267/2042/70720.
V. V. Mitta; A. V. Stupachenko (2020). "The first record of Gregoryceras (Ammonoidea, Aspidoceratidae) in the middle Oxfordian of the northern part of central Russia (Unzha River)". Paleontological Journal. 54 (1): 14–19. doi:10.1134/S0031030120010062.
Didier Bert; Stéphane Bersac; Léon Canut (2020). "Implications of the 'hemihoplitid-like' ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous)". Cretaceous Research. 106: Article 104239. doi:10.1016/j.cretres.2019.104239.
Dieter Korn; Qiulai Wang; Keyi Hu; Yuping Qi (2020). "The succession of the mid-Bashkirian ammonoids Cancelloceras and Gastrioceras in North China". Palaeoworld. in press. doi:10.1016/j.palwor.2020.04.009.
V.A. Zakharov; M.A. Rogov (2020). "High-resolution stratigraphy of buchiid bivalves and ammonites from the Jurassic–Cretaceous boundary beds in the Paskenta area (California)". Cretaceous Research. 110: Article 104422. doi:10.1016/j.cretres.2020.104422.
Günter Schweigert; Victor Schlampp (2020). "Hypowaagenia nov. gen., a rare genus of giant aspidoceratid ammonite from the Upper Jurassic of Southern Germany". Volumina Jurassica. 18 (1): 23–36.
Romain Jattiot; Alexis Gris; Vincent Trincal (2020). "New occurrence of the middle Toarcian "Telodactylites "eucosmus (Lippi Boncambi, 1947) (Ammonitina) from the NW European realm, and introduction of a new genus". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 295 (1): 53–60. doi:10.1127/njgpa/2020/0867.
Eva A. Bischof; Jens Lehmann (2020). "Ontogenetic analysis of Anisian (Middle Triassic) ptychitid ammonoids from Nevada, USA". Journal of Paleontology. Online edition. doi:10.1017/jpa.2020.25.
Nicholas Hebdon; Kathleen A. Ritterbush; YunJi Choi (2020). "Computational fluid dynamics modeling of fossil ammonoid shells". Palaeontologia Electronica. 23 (1): Article number 23(1):a21. doi:10.26879/956.
Alison J. Rowe; Neil H. Landman; J. Kirk Cochran; James D. Witts; Matthew P. Garb (2020). "Late Cretaceous methane seeps as habitats for newly hatched ammonites". PALAIOS. 35 (3): 151–163. doi:10.2110/palo.2019.105.
David J. Peterman; Margaret M. Yacobucci; Neal L. Larson; Charles Ciampaglio; Tom Linn (2020). "A method to the madness: Ontogenetic changes in the hydrostatic properties of Didymoceras (Nostoceratidae: Ammonoidea)". Paleobiology. 46 (2): 237–258. doi:10.1017/pab.2020.14.
Jan Ove R. Ebbestad; Marika Polechová; Björn Kröger; Juan Carlos Gutiérrez-Marco (2020). "Late Ordovician molluscs of the central and eastern Anti-Atlas, Morocco". In A. W. Hunter; J. J. Álvaro; B. Lefebvre; P. van Roy; S. Zamora (eds.). The Great Ordovician Biodiversification Event: Insights from the Tafilalt Biota, Morocco. Geological Society, London, Special Publications. The Geological Society of London. pp. SP485.9. doi:10.1144/SP485.9.
Amane Tajika; Neil H. Landman; René Hoffmann; Robert Lemanis; Naoki Morimoto; Christina Ifrim; Christian Klug (2020). "Chamber volume development, metabolic rates, and selective extinction in cephalopods". Scientific Reports. 10 (1): Article number 2950. doi:10.1038/s41598-020-59748-z. PMC 7031508. PMID 32076034.
Alexander Pohle; Dirk Fuchs; Dieter Korn; Christian Klug (2020). "Spatial distribution of oncocerid cephalopods on a Middle Devonian bedding plane suggests semelparous life cycle". Scientific Reports. 10 (1): Article number 2847. doi:10.1038/s41598-020-59507-0. PMC 7029046. PMID 32071346.
Dirk Fuchs; Vladimir Laptikhovsky; Svetlana Nikolaeva; Alexei Ippolitov; Mikhail Rogov (2020). "Evolution of reproductive strategies in coleoid mollusks". Paleobiology. 46 (1): 82–103. doi:10.1017/pab.2019.41.
R. Hoffmann; J. Bestwick; G. Berndt; R. Berndt; D. Fuchs; C. Klug (2020). "Pterosaurs ate soft-bodied cephalopods (Coleoidea)". Scientific Reports. 10: Article number 1230. doi:10.1038/s41598-020-57731-2. PMC 6985239. PMID 31988362.
Chatchalerm Ketwetsuriya; Baran Karapunar; Thasinee Charoentitirat; Alexander Nützel (2020). "Middle Permian (Roadian) gastropods from the Khao Khad Formation, Central Thailand: Implications for palaeogeography of the Indochina Terrane". Zootaxa. 4766 (1): 1–47. doi:10.11646/zootaxa.4766.1.1.
David A. Bullis; Hollister W. Herhold; Jesse E. Czekanski-Moir; David A. Grimaldi; Rebecca J. Rundell (2020). "Diverse new tropical land snail species from mid-Cretaceous Burmese amber (Mollusca: Gastropoda: Cyclophoroidea, Assimineidae)". Cretaceous Research. 107: Article 104267. doi:10.1016/j.cretres.2019.104267.
I.A. Balashov; E.E. Perkovsky (2020). "An Eocene land snail Balticopta gusakovi gen.n., sp.n. (Stylommatophora: Gastrocoptidae) from Baltic amber". Invertebrate Zoology. 17 (1): 18–24. doi:10.15298/invertzool.17.1.02.
Oleg Mandic; Mathias Harzhauser; Thomas A. Neubauer (2020). "Taxonomy, palaeoecology and stratigraphy of the middle Miocene mollusk fauna from the Gračanica coal pit near Bugojno in Bosnia and Herzegovina". Palaeobiodiversity and Palaeoenvironments. Online edition. doi:10.1007/s12549-020-00423-6.
Josep Juárez-Ruiz; Rafel Matamales-Andreu; Dietrich Kadolsky (2020). "Shape and habitat disparity in Palaeogene land snails (Stylommatophora, Orthalicoidea, Vidaliellidae) of southwestern Europe: two new bulimoid genera from the Palaeogene of Mallorca (Balearic Islands, western Mediterranean)". Journal of Iberian Geology. in press. doi:10.1007/s41513-020-00121-4.
Christopher L. Garvie; James L. Goedert; Arie W. Janssen (2020). "Paleogene and Late Cretaceous Pteropoda (Mollusca, Gastropoda, Heterobranchia) from North America". Zootaxa. 4782 (1): 1–115. doi:10.11646/zootaxa.4782.1.1.
Ewa Nosowska (2020). "Gastropods [Trochoidea: Trochidae Rafinesque, 1815 and Calliostomatidae Thiele, 1924 (1847)] from the middle Miocene of Ukraine, Central Paratethys". Acta Geologica Polonica. 70. doi:10.24425/agp.2019.126462.
Jean-Michel Pacaud (2020). "Fusulculus hanseni nom. nov., un nouveau nom de remplacement pour Epalxis ? rosenkrantzi Hansen, 2019 non Fusulculus rosenkrantzi (Traub, 1979)". Folia Conchyliologica. 54: 7–11.
Pierre Lozouet; Bruno Cahuzac; Laurent Charles (2020). "New occurrences of Modulidae (Mollusca: Gastropoda) from European Eocene, Oligocene and Miocene deposits: Data from 19th century collections". Carnets de Géologie. 20 (7): 125–139. doi:10.4267/2042/70761.
Mariel Ferrari; Crispin T. S. Little; Jed W. Atkinson (2020). "Upper Toarcian (Lower Jurassic) marine gastropods from the Cleveland Basin, England: systematics, palaeobiogeography and contribution to biotic recovery from the early Toarcian extinction event". Papers in Palaeontology. Online edition. doi:10.1002/spp2.1322.
Xin-fa Li; Guo-biao Li; Christopher L. Garvie; Tian-yang Wang; Jun Zhao (2020). "First report of the early Eocene pteropods from the Zhepure Formation in Yadong, southern Tibet, China". Journal of Paleontology. Online edition. doi:10.1017/jpa.2020.28.
J. Gründel; B. Hostettler; U. Menkveld-Gfeller (2020). "Die Gattungen der Brachytrematidae Cossmann, 1906 (Gastropoda: Caenogastropoda) im Jura Europas" (PDF). Freiberger Forschungshefte C 558. psf - Paläontologie, Stratigraphie, Fazies. 25: 109–119.
Jean-Michel Pacaud; Guillermo Gómez (2020). "Description d'une nouvelle espèce de Lozouetina Dolin & Dockery, 2018 (Mollusca, Gastropoda, Ovulidae) du Bartonien (Éocène moyen) de Loire-Atlantique (France) et de la province de Huesca (Espagne)". Folia Conchyliologica. 54: 33–47.
Dirk Fehse; Zoltán Vicián (2020). "Contributions to the knowledge of the Triviidae, XL. closing a gap". Acta Conchyliorum. 19: 114–120.
Marcello Guimarães Simões; Jacqueline Peixoto Neves; Arturo César Taboada; Maria Alejandra Pagani; Filipe Giovanini Varejão; Mário Luis Assine (2020). "Macroinvertebrates of the Capivari marine bed, late Paleozoic glacial Itararé Group, northeast Paraná Basin, Brazil: Paleoenvironmental and paleogeographic implications". Journal of South American Earth Sciences. 98: Article 102433. doi:10.1016/j.jsames.2019.102433.
Sven N. Nielsen; Francisca A. Ampuero (2020). "The Lower Miocene Mitridae (Gastropoda) of Chile". Ameghiniana. in press. doi:10.5710/AMGH.18.04.2020.3330.
Thomas A. Neubauer; Oleg Mandic; Gordana Jovanović; Mathias Harzhauser (2020). "The Serbian Lake System: a stepping stone for freshwater molluscs in the middle Miocene". Papers in Palaeontology. Online edition. doi:10.1002/spp2.1308.
Daniel L. Geiger; James L. Goedert (2020). "Scissurella nesbittae, new species, from the Gries Ranch Formation, Lewis County, Washington State (Gastropoda: Vetigastropoda: Scissurellidae)". Zootaxa. 4759 (4): 593–596. doi:10.11646/zootaxa.4759.4.11.
Henry J. L. Gard (2020). "A new species of fossil Scutus Montfort, 1810 from New Zealand (Mollusca: Gastropoda: Fissurellidae)". Molluscan Research. in press. doi:10.1080/13235818.2020.1741069.
Simon Schneider; Heinz A. Kollmann; Martin Pickford (2020). "Late Cretaceous to ?Paleocene freshwater, brackish-water and marine molluscs from Al-Khodh, Oman". Bulletin of Geosciences. 95 (2): 179–204. doi:10.3140/bull.geosci.1768.
Takuma Haga (2020). "First Strebloceras (Mollusca: Gastropoda: Caecidae) from the middle Pleistocene of Japan" (PDF). Science Report of the Toyohashi Museum of Natural History. 30: 1–19.
Dietrich Kadolsky (2020). "Early Miocene land and freshwater gastropods from the karst fissure filling Tomerdingen 1 (southern Germany)". Palaeodiversity. 13 (1): 11–23. doi:10.18476/pale.v13.a2.
Ting-ting Yu (2020). "New material of terrestrial gastropods from mid-Cretaceous Burmese amber". Acta Palaeontologica Sinica. 59 (1): 43–48. doi:10.19800/j.cnki.aps.2020.01.005.
Tomoki Kase; Susumu Tomida; Keisuke Inoue; Masahito Kadota (2020). "New species of Turbo (Marmarostoma) (Gastropoda, Turbinidae) from the Miocene limestone in central Japan: a window into the Miocene marine biodiversity in the northeastern Philippine Sea". Paleontological Research. 24 (1): 14–25. doi:10.2517/2019PR002.
A. L. Hawke (2020). "Two new species of Umbilia (Caenogastropoda: Cypraeidae) from the Australian Miocene". Acta Conchyliorum. 19.
Maximiliano Jorge Alvarez; Claudia Julia del Río (2020). "Phylogeny of the Eocene Antarctic Tapetinae Gray, 1851 (Bivalvia, Veneridae) from the La Meseta and Submeseta formations". Journal of Paleontology. Online edition. doi:10.1017/jpa.2020.30.
Victor R. da Silva; Filipe G. Varejão; Suzana A. Matos; Franz T. Fürsich; Aleksandra Skawina; Simon Schneider; Lucas V. Warren; Mario L. Assine; Marcello G. Simões (2020). "Cratonaia novaolindensis gen. et sp. nov. (Unionida, Silesunionoidea) from the Aptian of Brazil (Araripe Basin), and its implications for the early evolution of freshwater mussels". Cretaceous Research. 107: Article 104275. doi:10.1016/j.cretres.2019.104275.
Baran Karapunar; Winfried Werner; Franz T. Fürsich; Alexander Nützel (2020). "Taxonomy and palaeoecology of the Early Jurassic (Pliensbachian) bivalves from Buttenheim, Franconia (Southern Germany)". Palaeontographica Abteilung A. in press. doi:10.1127/pala/2020/0098.
I. N. Kosenko; E. K. Metelkin (2020). "Early Cretaceous oysters from Mangyshlak: taxonomic composition, stratigraphic and paleobiogeographical distribution". Paleontological Journal. 54 (3): 230–242. doi:10.1134/S0031030120030077.
Charles L. Powell, II; Cheryl D. Millard; Christine Garcia (2020). "A new Lyropecten (Pectinidae, Bivalvia, Mollusca) from the central California Miocene, USA". PaleoBios. 37: ucmp_paleobios_47813.
Takashi Matsubara; Toshikazu Ohta; Yuuki Nakamura; Naotomo Kaneko; Yasuhiro Ito (2020). "Deep-sea fossil molluscan assemblages from a new locality in the lowest Miocene Tsubetsu Formation in the Tsubetsu area, eastern Hokkaidō, Japan". Bulletin of the Kitami City Museums. 1: 1–27.
Jean-Pierre Masse; Mukerrem Fenerci-Masse (2020). "Taxonomy and biostratigraphy of Early Cretaceous species of the genus Monopleura Matheron (Hippuritida, Monopleuridae) of the Mediterranean region". Cretaceous Research. 108: Article 104287. doi:10.1016/j.cretres.2019.104287.
Kazutaka Amano; Hiroshi Kurita (2020). "A new Paleocene species of Myonera (Bivalvia: Cuspidariidae) from eastern Hokkaido, northern Japan". The Nautilus. 134 (1): 51–56.
Pamela Díaz Saravia; Carlos R. González (2020). "New Pennsylvanian Bivalvia (Mollusca), the Early Permian glaciation and the Carboniferous–Permian boundary in western Argentina". PalZ. in press. doi:10.1007/s12542-020-00517-8.
Agustina G. Toscano; Darío G. Lazo (2020). "Taxonomic revision and palaeobiogeographic affinities of Berriasian–Valanginian oysters from the Vaca Muerta and Mulichinco formations, southern Mendoza, Neuquén Basin, Argentina". Cretaceous Research. 109: Article 104358. doi:10.1016/j.cretres.2019.104358.
Damián E. Pérez; Luciana M. Giachetti (2020). "Is Cyclocardia (Conrad) a wastebasket taxon? Exploring the phylogeny of the most diverse genus of the Carditidae (Archiheterodonta, Bivalvia)". Palaeontology. 63 (3): 477–495. doi:10.1111/pala.12467.
Vitor B. Guerrini; Suzana A. Matos; Rosemarie Rohn; Filipe G. Varejão; Lucas V. Warren; Marcello G. Simões (2020). "The last chapter of 30 million years of molluscan evolution: Permian non-marine bivalves of the Rio do Rasto Formation, Paraná Basin, Brazil". PalZ. in press. doi:10.1007/s12542-019-00455-0.
Jocelyn Rojas; Sven N. Nielsen (2020). "Two new species of Pratulum from the Lower Miocene of Chile - the first records of Pratulum (Bivalvia, Cardiidae) from South America". Ameghiniana. in press. doi:10.5710/AMGH.20.05.2020.3290.
Xin Rao; Peter W. Skelton; Shin–ichi Sano; Yiqiang Zhang; Yichun Zhang; Yanhong Pan; Huawei Cai; Bo Peng; Tong Zhang; Zhaoxiong Ma (2020). "Shajia, a new genus of polyconitid rudist from the Langshan Formation of the Lhasa Block, Tibet, and its palaeogeographical implications". Cretaceous Research. 105: Article 104151. doi:10.1016/j.cretres.2019.05.009.
Bruno Dell'Angelo; Bernard M. Landau; Maurizio Sosso; Marco Taviani (2020). "Late Pleistocene Red Sea Mollusca: 1. Polyplacophora". Zootaxa. 4772 (3): 401–449. doi:10.11646/zootaxa.4772.3.1.
Patrick M. Smith; Glenn A. Brock; John R. Paterson (2020). "Shelly fauna from the Cambrian (Miaolingian, Guzhangian) Shannon Formation and the SPICE event in the Amadeus Basin, Northern Territory". Alcheringa: An Australasian Journal of Palaeontology. 44 (1): 1–24. doi:10.1080/03115518.2019.1660405.
John S. Peel (2020). "The oldest palaeoloricate mollusc (Cambrian Series 2, Stage 4; North Greenland) and its bearing on aculiferan evolution". Bulletin of Geosciences. 95 (2): 127–144. doi:10.3140/bull.geosci.1779.
Roger D. K. Thomas; Bruce Runnegar; Kerry Matt (2020). "Pelagiella exigua, an early Cambrian stem gastropod with chaetae: lophotrochozoan heritage and conchiferan novelty". Palaeontology. 63 (4): 601–627. doi:10.1111/pala.12476.

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[1] John C.W. Cope; Stephen M. Etches (2020). "Subdivision of the Kimmeridgian Autissiodorensis Zone (Upper Jurassic, UK)". Proceedings of the Geologists' Association. in press. doi:10.1016/j.pgeola.2020.03.006.

[Roopnarinites-2] Romain Jattiot; Hugo Bucher; Arnaud Brayard (2020). "Smithian (Early Triassic) ammonoid faunas from Timor: taxonomy and biochronology". Palaeontographica Abteilung A. 317 (1–6): 1–137. doi:10.1127/pala/2020/0096.

[Coquandiceras-3] William James Kennedy (2020). "Upper Albian, Cenomanian and Upper Turonian ammonite faunas from the Fahdène Formation of Central Tunisia and correlatives in northern Algeria". Acta Geologica Polonica. 70. doi:10.24425/agp.2019.126459.

[CdG204-4] Francis Amédro; Francis Robaszynski; Hervé Châtelier; Patrice Ferchaud; Bertrand Matrion (2020). "Identification d'un biohorizon d'ammonites à Romaniceras (Romaniceras) marigniacum sp. nov. (Turonien moyen) à la base du Tuffeau Jaune de Touraine (France)". Carnets de Géologie. 20 (4): 37–89. doi:10.4267/2042/70720.

[5] V. V. Mitta; A. V. Stupachenko (2020). "The first record of Gregoryceras (Ammonoidea, Aspidoceratidae) in the middle Oxfordian of the northern part of central Russia (Unzha River)". Paleontological Journal. 54 (1): 14–19. doi:10.1134/S0031030120010062.

[Lenicostites-6] Didier Bert; Stéphane Bersac; Léon Canut (2020). "Implications of the 'hemihoplitid-like' ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous)". Cretaceous Research. 106: Article 104239. doi:10.1016/j.cretres.2019.104239.

[7] Dieter Korn; Qiulai Wang; Keyi Hu; Yuping Qi (2020). "The succession of the mid-Bashkirian ammonoids Cancelloceras and Gastrioceras in North China". Palaeoworld. in press. doi:10.1016/j.palwor.2020.04.009.

[8] V.A. Zakharov; M.A. Rogov (2020). "High-resolution stratigraphy of buchiid bivalves and ammonites from the Jurassic–Cretaceous boundary beds in the Paskenta area (California)". Cretaceous Research. 110: Article 104422. doi:10.1016/j.cretres.2020.104422.

[9] Günter Schweigert; Victor Schlampp (2020). "Hypowaagenia nov. gen., a rare genus of giant aspidoceratid ammonite from the Upper Jurassic of Southern Germany". Volumina Jurassica. 18 (1): 23–36.

[10] Romain Jattiot; Alexis Gris; Vincent Trincal (2020). "New occurrence of the middle Toarcian "Telodactylites "eucosmus (Lippi Boncambi, 1947) (Ammonitina) from the NW European realm, and introduction of a new genus". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 295 (1): 53–60. doi:10.1127/njgpa/2020/0867.

[11] Eva A. Bischof; Jens Lehmann (2020). "Ontogenetic analysis of Anisian (Middle Triassic) ptychitid ammonoids from Nevada, USA". Journal of Paleontology. Online edition. doi:10.1017/jpa.2020.25.

[12] Nicholas Hebdon; Kathleen A. Ritterbush; YunJi Choi (2020). "Computational fluid dynamics modeling of fossil ammonoid shells". Palaeontologia Electronica. 23 (1): Article number 23(1):a21. doi:10.26879/956.

[13] Alison J. Rowe; Neil H. Landman; J. Kirk Cochran; James D. Witts; Matthew P. Garb (2020). "Late Cretaceous methane seeps as habitats for newly hatched ammonites". PALAIOS. 35 (3): 151–163. doi:10.2110/palo.2019.105.

[14] David J. Peterman; Margaret M. Yacobucci; Neal L. Larson; Charles Ciampaglio; Tom Linn (2020). "A method to the madness: Ontogenetic changes in the hydrostatic properties of Didymoceras (Nostoceratidae: Ammonoidea)". Paleobiology. 46 (2): 237–258. doi:10.1017/pab.2020.14.

[Tafadnatoceras-15] Jan Ove R. Ebbestad; Marika Polechová; Björn Kröger; Juan Carlos Gutiérrez-Marco (2020). "Late Ordovician molluscs of the central and eastern Anti-Atlas, Morocco". In A. W. Hunter; J. J. Álvaro; B. Lefebvre; P. van Roy; S. Zamora (eds.). The Great Ordovician Biodiversification Event: Insights from the Tafilalt Biota, Morocco. Geological Society, London, Special Publications. The Geological Society of London. pp. SP485.9. doi:10.1144/SP485.9.

[16] Amane Tajika; Neil H. Landman; René Hoffmann; Robert Lemanis; Naoki Morimoto; Christina Ifrim; Christian Klug (2020). "Chamber volume development, metabolic rates, and selective extinction in cephalopods". Scientific Reports. 10 (1): Article number 2950. doi:10.1038/s41598-020-59748-z. PMC 7031508. PMID 32076034.

[17] Alexander Pohle; Dirk Fuchs; Dieter Korn; Christian Klug (2020). "Spatial distribution of oncocerid cephalopods on a Middle Devonian bedding plane suggests semelparous life cycle". Scientific Reports. 10 (1): Article number 2847. doi:10.1038/s41598-020-59507-0. PMC 7029046. PMID 32071346.

[18] Dirk Fuchs; Vladimir Laptikhovsky; Svetlana Nikolaeva; Alexei Ippolitov; Mikhail Rogov (2020). "Evolution of reproductive strategies in coleoid mollusks". Paleobiology. 46 (1): 82–103. doi:10.1017/pab.2019.41.

[19] R. Hoffmann; J. Bestwick; G. Berndt; R. Berndt; D. Fuchs; C. Klug (2020). "Pterosaurs ate soft-bodied cephalopods (Coleoidea)". Scientific Reports. 10: Article number 1230. doi:10.1038/s41598-020-57731-2. PMC 6985239. PMID 31988362.

[Altotomaria-20] Chatchalerm Ketwetsuriya; Baran Karapunar; Thasinee Charoentitirat; Alexander Nützel (2020). "Middle Permian (Roadian) gastropods from the Khao Khad Formation, Central Thailand: Implications for palaeogeography of the Indochina Terrane". Zootaxa. 4766 (1): 1–47. doi:10.11646/zootaxa.4766.1.1.

[Eotrichophorus-21] David A. Bullis; Hollister W. Herhold; Jesse E. Czekanski-Moir; David A. Grimaldi; Rebecca J. Rundell (2020). "Diverse new tropical land snail species from mid-Cretaceous Burmese amber (Mollusca: Gastropoda: Cyclophoroidea, Assimineidae)". Cretaceous Research. 107: Article 104267. doi:10.1016/j.cretres.2019.104267.

[22] I.A. Balashov; E.E. Perkovsky (2020). "An Eocene land snail Balticopta gusakovi gen.n., sp.n. (Stylommatophora: Gastrocoptidae) from Baltic amber". Invertebrate Zoology. 17 (1): 18–24. doi:10.15298/invertzool.17.1.02.

[PPMandicetal-23] Oleg Mandic; Mathias Harzhauser; Thomas A. Neubauer (2020). "Taxonomy, palaeoecology and stratigraphy of the middle Miocene mollusk fauna from the Gračanica coal pit near Bugojno in Bosnia and Herzegovina". Palaeobiodiversity and Palaeoenvironments. Online edition. doi:10.1007/s12549-020-00423-6.

[Calculocochlea-24] Josep Juárez-Ruiz; Rafel Matamales-Andreu; Dietrich Kadolsky (2020). "Shape and habitat disparity in Palaeogene land snails (Stylommatophora, Orthalicoidea, Vidaliellidae) of southwestern Europe: two new bulimoid genera from the Palaeogene of Mallorca (Balearic Islands, western Mediterranean)". Journal of Iberian Geology. in press. doi:10.1007/s41513-020-00121-4.

[Zootaxa47821-25] Christopher L. Garvie; James L. Goedert; Arie W. Janssen (2020). "Paleogene and Late Cretaceous Pteropoda (Mollusca, Gastropoda, Heterobranchia) from North America". Zootaxa. 4782 (1): 1–115. doi:10.11646/zootaxa.4782.1.1.

[26] Ewa Nosowska (2020). "Gastropods [Trochoidea: Trochidae Rafinesque, 1815 and Calliostomatidae Thiele, 1924 (1847)] from the middle Miocene of Ukraine, Central Paratethys". Acta Geologica Polonica. 70. doi:10.24425/agp.2019.126462.

[27] Jean-Michel Pacaud (2020). "Fusulculus hanseni nom. nov., un nouveau nom de remplacement pour Epalxis ? rosenkrantzi Hansen, 2019 non Fusulculus rosenkrantzi (Traub, 1979)". Folia Conchyliologica. 54: 7–11.

[CdG207-28] Pierre Lozouet; Bruno Cahuzac; Laurent Charles (2020). "New occurrences of Modulidae (Mollusca: Gastropoda) from European Eocene, Oligocene and Miocene deposits: Data from 19th century collections". Carnets de Géologie. 20 (7): 125–139. doi:10.4267/2042/70761.

[PPFerrarietal-29] Mariel Ferrari; Crispin T. S. Little; Jed W. Atkinson (2020). "Upper Toarcian (Lower Jurassic) marine gastropods from the Cleveland Basin, England: systematics, palaeobiogeography and contribution to biotic recovery from the early Toarcian extinction event". Papers in Palaeontology. Online edition. doi:10.1002/spp2.1322.

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[AC19FehseVician-33] Dirk Fehse; Zoltán Vicián (2020). "Contributions to the knowledge of the Triviidae, XL. closing a gap". Acta Conchyliorum. 19: 114–120.

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[35] Sven N. Nielsen; Francisca A. Ampuero (2020). "The Lower Miocene Mitridae (Gastropoda) of Chile". Ameghiniana. in press. doi:10.5710/AMGH.18.04.2020.3330.

[PPSerbianLakeSystem-36] Thomas A. Neubauer; Oleg Mandic; Gordana Jovanović; Mathias Harzhauser (2020). "The Serbian Lake System: a stepping stone for freshwater molluscs in the middle Miocene". Papers in Palaeontology. Online edition. doi:10.1002/spp2.1308.

[37] Daniel L. Geiger; James L. Goedert (2020). "Scissurella nesbittae, new species, from the Gries Ranch Formation, Lewis County, Washington State (Gastropoda: Vetigastropoda: Scissurellidae)". Zootaxa. 4759 (4): 593–596. doi:10.11646/zootaxa.4759.4.11.

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[41] Dietrich Kadolsky (2020). "Early Miocene land and freshwater gastropods from the karst fissure filling Tomerdingen 1 (southern Germany)". Palaeodiversity. 13 (1): 11–23. doi:10.18476/pale.v13.a2.

[42] Ting-ting Yu (2020). "New material of terrestrial gastropods from mid-Cretaceous Burmese amber". Acta Palaeontologica Sinica. 59 (1): 43–48. doi:10.19800/j.cnki.aps.2020.01.005.

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[Adelfia-45] Maximiliano Jorge Alvarez; Claudia Julia del Río (2020). "Phylogeny of the Eocene Antarctic Tapetinae Gray, 1851 (Bivalvia, Veneridae) from the La Meseta and Submeseta formations". Journal of Paleontology. Online edition. doi:10.1017/jpa.2020.30.

[46] Victor R. da Silva; Filipe G. Varejão; Suzana A. Matos; Franz T. Fürsich; Aleksandra Skawina; Simon Schneider; Lucas V. Warren; Mario L. Assine; Marcello G. Simões (2020). "Cratonaia novaolindensis gen. et sp. nov. (Unionida, Silesunionoidea) from the Aptian of Brazil (Araripe Basin), and its implications for the early evolution of freshwater mussels". Cretaceous Research. 107: Article 104275. doi:10.1016/j.cretres.2019.104275.

[Eothyasira-47] Baran Karapunar; Winfried Werner; Franz T. Fürsich; Alexander Nützel (2020). "Taxonomy and palaeoecology of the Early Jurassic (Pliensbachian) bivalves from Buttenheim, Franconia (Southern Germany)". Palaeontographica Abteilung A. in press. doi:10.1127/pala/2020/0098.

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[49] Charles L. Powell, II; Cheryl D. Millard; Christine Garcia (2020). "A new Lyropecten (Pectinidae, Bivalvia, Mollusca) from the central California Miocene, USA". PaleoBios. 37: ucmp_paleobios_47813.

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[52] Kazutaka Amano; Hiroshi Kurita (2020). "A new Paleocene species of Myonera (Bivalvia: Cuspidariidae) from eastern Hokkaido, northern Japan". The Nautilus. 134 (1): 51–56.

[PalZPennsylvanianBivalvia-53] Pamela Díaz Saravia; Carlos R. González (2020). "New Pennsylvanian Bivalvia (Mollusca), the Early Permian glaciation and the Carboniferous–Permian boundary in western Argentina". PalZ. in press. doi:10.1007/s12542-020-00517-8.

[54] Agustina G. Toscano; Darío G. Lazo (2020). "Taxonomic revision and palaeobiogeographic affinities of Berriasian–Valanginian oysters from the Vaca Muerta and Mulichinco formations, southern Mendoza, Neuquén Basin, Argentina". Cretaceous Research. 109: Article 104358. doi:10.1016/j.cretres.2019.104358.

[55] Damián E. Pérez; Luciana M. Giachetti (2020). "Is Cyclocardia (Conrad) a wastebasket taxon? Exploring the phylogeny of the most diverse genus of the Carditidae (Archiheterodonta, Bivalvia)". Palaeontology. 63 (3): 477–495. doi:10.1111/pala.12467.

[Relogiincola-56] Vitor B. Guerrini; Suzana A. Matos; Rosemarie Rohn; Filipe G. Varejão; Lucas V. Warren; Marcello G. Simões (2020). "The last chapter of 30 million years of molluscan evolution: Permian non-marine bivalves of the Rio do Rasto Formation, Paraná Basin, Brazil". PalZ. in press. doi:10.1007/s12542-019-00455-0.

[AmeghinianaPratulum-57] Jocelyn Rojas; Sven N. Nielsen (2020). "Two new species of Pratulum from the Lower Miocene of Chile - the first records of Pratulum (Bivalvia, Cardiidae) from South America". Ameghiniana. in press. doi:10.5710/AMGH.20.05.2020.3290.

[58] Xin Rao; Peter W. Skelton; Shin–ichi Sano; Yiqiang Zhang; Yichun Zhang; Yanhong Pan; Huawei Cai; Bo Peng; Tong Zhang; Zhaoxiong Ma (2020). "Shajia, a new genus of polyconitid rudist from the Langshan Formation of the Lhasa Block, Tibet, and its palaeogeographical implications". Cretaceous Research. 105: Article 104151. doi:10.1016/j.cretres.2019.05.009.

[Zootaxa47723-59] Bruno Dell'Angelo; Bernard M. Landau; Maurizio Sosso; Marco Taviani (2020). "Late Pleistocene Red Sea Mollusca: 1. Polyplacophora". Zootaxa. 4772 (3): 401–449. doi:10.11646/zootaxa.4772.3.1.

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[61] John S. Peel (2020). "The oldest palaeoloricate mollusc (Cambrian Series 2, Stage 4; North Greenland) and its bearing on aculiferan evolution". Bulletin of Geosciences. 95 (2): 127–144. doi:10.3140/bull.geosci.1779.

[62] Roger D. K. Thomas; Bruce Runnegar; Kerry Matt (2020). "Pelagiella exigua, an early Cambrian stem gastropod with chaetae: lophotrochozoan heritage and conchiferan novelty". Palaeontology. 63 (4): 601–627. doi:10.1111/pala.12476.