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2018 in paleomalacology

This list, 2018 in paleomalacology, is a list of new taxa of ammonites and other fossil cephalopods, as well as fossil gastropods, bivalves and other molluscs that were described during the year 2018, as well as other significant discoveries and events related to molluscan paleontology that occurred in the year 2018.

General research

  • A study on the impact of the Paleocene–Eocene Thermal Maximum on the richness, turnover, or ecological structure of shallow marine molluscan faunas from the Gulf Coastal Plain, or on the body size, growth rate, or life span of component taxa, is published by Ivany et al. (2018).[1]
  • A study on the basal metabolic rate of Pliocene to recent bivalves and gastropods from the Western Atlantic is published by Strotz et al. (2018).[2]
  • A study evaluating how faithfully stratigraphic ranges of extant Adriatic molluscs are recorded in a series of cores drilled through alluvial, coastal and shallow-marine strata of the Po Plain (Italy) is published by Nawrot et al. (2018), who also evaluate the implications of their study for interpretations of the timing, duration and ecological selectivity of mass extinction events in general.[3]

Ammonites

Research

  • A study on the life history and habits of ammonites as indicated by measurements of their conchs is published by Walton & Korn (2018).[4]
  • A study on the life mode of ammonite hatchlings, as indicated by the oxygen and carbon isotope composition of the embryonic shells and early postembryonic whorls of five juveniles of Hoploscaphites comprimus from the Fox Hills Formation (South Dakota, United States), is published by Linzmeier et al. (2018).[5]
  • A study on the succession of latest Permian ammonite fossils in Iran is published by Kiessling et al. (2018), who interpret their findings as indicating that Permian–Triassic extinction event had a prelude leading to extinction pulses, a decline of body size and morphological simplification in latest Permian ammonites.[6]
  • A study on the distribution and abundance of Early Triassic ammonites from the western United States basin is published by Jattiot et al. (2018).[7]
  • A study testing whether the Rapoport effect can be observed among the early Pliensbachian ammonites from the area of the present-day Europe, the Middle East and North Africa is published by Zacaï et al. (2018).[8]
  • A study on the number of eggs laid by large adult females of Cretaceous ammonites and belemnites, as well as on the ecological niches occupied by juvenile ammonites and belemnites, is published by Tajika, Nützel & Klug (2018).[9]
  • Ammonite nuclei (earliest whorls), representing a rare case of preservation of very early ontogenetic stages of ammonites and indicating high juvenile mortality that is seldom recorded in the fossil record of this group, are described from the Cretaceous (upper Turonian to Coniacian) of Tanzania by Ifrim, Wendler & Lehmann (2018), who interpret their finding as indicating that the mating and spawning areas of ammonites were locally restricted, and that their earliest ontogenetic stages were probably distributed by currents passing by their mating and spawning areas, similar to extant coleoids.[10]
  • A study on the paleoecology of the ammonites belonging to the genera Baculites and Scaphites, as indicated by the intracolonial variance in the size of zooids of cheilostome bryozoans that colonized the internal body chambers of the shells of these ammonites once they settled to the seafloor following the death of the ammonite, is published by Berry (2018).[11]
  • A study on the growth of spines in Kimmeridgian aspidoceratids, Turonian euomphaloceratines and Coniacian collignoniceratids is published by Ifrim, Bengtson & Schweigert (2018).[12]
  • A study on the suture lines in Cretaceous ammonite genera and on the link between suture complexity and generic longevity in ammonites is published by Pérez-Claros & Bengtson (2018).[13]
  • A study on the ammonite turnover events during the broad 'mid-Cretaceous' interval is published by Bengtson & Kakabadze (2018).[14]
  • A sclerochronological study of shell material from seep and age-equivalent non-seep specimens of Baculites compressus, aiming to test the hypothesis that methane seeps provided a habitat for ammonites, is published by Landman et al. (2018).[15]

New taxa

Name Novelty Status Authors Age Unit Location Notes Images

Ambites bjerageri[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Ceratite Marls

Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Gyronitidae.

Ambites bojeseni[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Ceratite Marls

India[17]
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Gyronitidae.

Ambites nyingmai[17]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

India

A member of Ceratitida belonging to the group Meekocerataceae and the family Gyronitidae.

Ambites subradiatus[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Ceratite Marls

India[17]
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Gyronitidae.

Ambites tenuis[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Lower Ceratite Limestone

India[17]
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Gyronitidae.

Arctoceras rubyae[18]

Sp. nov

Valid

Jenks & Brayard

Early Triassic

United States
( Nevada)

Aspenites weitschati[18]

Sp. nov

Valid

Jenks & Brayard

Early Triassic

United States
( Nevada)

Aspidoceras (Pseudowaagenia) inerme[19]

Sp. nov

Valid

Énay

Late Jurassic (Kimmeridgian)

France

Awanites[16]

Gen. et sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Ceratite Marls

Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Paranoritidae. Genus includes new species A. awani.

Borroceras[20]

Gen. et sp. et comb. nov

Valid

Vermeulen et al.

Early Cretaceous

France

A relative of Emericiceras. The type species is B. borroi; genus also includes B. ottohaasi (Sarkar, 1955) and B. mahadevai (Sarkar, 1955).

Bukkenites sakesarensis[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Lower Ceratite Limestone

India[17]
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Proptychitidae.

Bullatihungarites[21]

Gen. et comb. nov

Valid

Vörös

Middle Triassic (Anisian)

Vászoly Formation

Bosnia and Herzegovina
Hungary
Italy

A member of the family Hungaritidae. The type species is "Hungarites" emiliae Mojsisovics (1882); genus also includes "Ceratites (Hungarites)" semiplicatus Hauer (1896).

Clausiuraloceras mechetlense[22]

Sp. nov

Valid

Kutygin

Permian (Kungurian)

Russia

Comahueites[23]

Gen. et sp. nov

Valid

Aguirre-Urreta & Rawson

Early Cretaceous (Early Hauterivian)

Agrio Formation

Argentina

A member of the family Neocomitidae. Genus includes new species C. aequalicostatus.

Condensoceras[18]

Gen. et comb. nov

Valid

Jenks & Brayard

Early Triassic

United States
( Nevada)

A member of the family Xenoceltitidae; a new genus for "Xenoceltites" youngi Kummel & Steele (1962).

Conteites[24]

Gen. et comb. nov

Valid

Delanoy et al.

Early Cretaceous (Barremian)

France

A member of Ancyloceratina belonging to the family Heteroceratidae. The type species is "Heteroceras" fuhrae Delanoy (1997).

Costaclymenia subsolaris[25]

Sp. nov

Valid

Korn, Bockwinkel & Ebbighausen

Devonian (Famennian)

Morocco

Crittendenites[18]

Gen. et sp. nov

Valid

Jenks & Brayard

Early Triassic

United States
( Nevada)

A relative of Wyomingites Hyatt (1900); both genera are assigned to the new family Crittendentidae. Genus includes new species C. jattioti.

Delphinites heineae[26]

Sp. nov

Valid

Mitta

Early Cretaceous (Valanginian)

Russia

A member of the family Neocomitidae.

Diptychoceras iwatense[27]

Sp. nov

Valid

Obata & Matsukawa

Early Cretaceous

Miyako Group

Japan

Djanaliparkinsonia alanica[28]

Sp. nov

Valid

Mitta

Middle Jurassic (Bajocian)

Djangura Formation

Russia
( Karachay-Cherkessia)

A member of the family Stephanoceratidae.

Dorsoplanites typicus[29]

Nom. nov

Valid

Mitta & Starodubtseva

Late Jurassic

Russia

A replacement name for Dorsoplanites panderi auct. non Eichwald (1840).

Elkoceras[18]

Gen. et comb. nov

Valid

Jenks & Brayard

Early Triassic

United States
( Nevada)

An ammonite of uncertain phylogenetic placement; a new genus for "Dieneroceras" spathi Kummel & Steele (1962).

Eofrechites[30]

Gen. et sp. nov

Valid

Ji & Bucher

Middle Triassic (Anisian)

Canada
( British Columbia)

Genus includes new species E. roopnarini.

Eoscaphites kuersteineri[31]

Sp. nov

Valid

Tajika, Tschanz & Klug

Early Cretaceous (Albian)

 Switzerland

Epikellnerites[21]

Gen. et comb. et 4 sp. nov

Valid

Vörös

Middle Triassic (Anisian)

Bosnia and Herzegovina
Hungary
Italy

A member of the family Ceratitidae. The type species is "Ceratites" angustecarinatus Hauer (1896); genus also includes "Kellnerites" bagolinensis Brack & Rieber (1993), as well as new species E. tamasi, E. vaszolyensis, E. pseudocholnokyi and E. spinatus.

Gambleites[18]

Gen. et sp. nov

Valid

Jenks & Brayard

Early Triassic

United States
( Nevada)

A member of the family Proptychitidae. Genus includes new species G. eichhorni.

Geticeras[32]

Gen. et sp. nov

Valid

Pandey, Pathak & Jaitly

Early Cretaceous (Valanginian)

Giumal Formation

India

A member of the family Neocomitidae. The type species is G. getensis.

Ghazalaites[16]

Gen. et sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Lower Ceratite Limestone

India[17]
Pakistan

A member of the family Ophiceratidae. The type species is G. roohii.

Glaucolithites gardarikensis[33]

Sp. nov

Valid

Kiselev in Kiselev & Rogov

Late Jurassic

Russia
( Ulyanovsk Oblast)

A member of the family Dorsoplanitidae.

Gyronites bullatus[17]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

India

A member of Ceratitida belonging to the group Meekocerataceae and the family Gyronitidae.

Gyronites levilatus[17]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

India

A member of Ceratitida belonging to the group Meekocerataceae and the family Gyronitidae.

Gyronites schwanderi[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Lower Ceratite Limestone

India[17]
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Gyronitidae.

Heteroceras gracile[34]

Sp. nov

Valid

Baudouin et al.

Early Cretaceous (late Barremian)

Bulgaria
France
Japan?

Hungarites sinuosus[21]

Sp. nov

Valid

Vörös

Middle Triassic (Anisian)

Vászoly Formation

Hungary

A member of the family Hungaritidae.

Hungarites szentei[21]

Sp. nov

Valid

Vörös

Middle Triassic (Anisian)

Vászoly Formation

Hungary

A member of the family Hungaritidae.

Hybonoticeras authariformis[35]

Sp. nov

Valid

Olóriz & Villaseñor

Late Jurassic (Tithonian)

Mexico

Hypacanthoplites regina[27]

Sp. nov

Valid

Obata & Matsukawa

Early Cretaceous

Miyako Group

Japan

Hyparpadites szaboi[21]

Sp. nov

Valid

Vörös

Middle Triassic (Anisian)

Vászoly Formation

Hungary

A member of the family Ceratitidae.

Immelites[36]

Gen. et comb. nov

Valid

Bulot, Frau & Pictet

Early Cretaceous (Aptian)

Ganbadongshan Formation

China

A member of the family Acrioceratidae; a new genus for "Tonohamites" multituberculatus Immel & Guoxiong (2002).

Jenslehmannella[36]

Gen. et sp. nov

Valid

Bulot, Frau & Pictet

Early Cretaceous (Early Aptian)

Dariyan Formation

Iran

A member of the family Acrioceratidae. The type species is J. bangestanense.

Karasyazites[37]

Gen. et comb. nov

Valid

Mitta

Early Cretaceous

Russia

A member of the family Himalayitidae. The type species is "Subalpinites" bajarunasi Luppov.

Klingerites[36]

Gen. et comb. nov

Valid

Bulot, Frau & Pictet

Early Cretaceous (Aptian)

Argentina
Madagascar
South Africa

A member of the family Acrioceratidae; a new genus for "Toxoceratoides"? haughtoni Klinger & Kennedy (1977).

Koiloceras sahibi[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Lower Ceratite Limestone

Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Paranoritidae.

Kossmaticeras (Kossmaticeras) kilenensis[38]

Sp. nov

Valid

Alsen

Late Cretaceous (Coniacian)

Sølverbæk Formation

Greenland

Kyoktites[16]

Gen. et sp. et comb. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Lower Ceratite Limestone

India
Pakistan

A member of the family Ophiceratidae. The type species is K. hebeiseni; genus also includes "Meekoceras" kyokticum von Krafft (1909).

Leioceras hansrieberi[39]

Sp. nov

Valid

Dietze & Schweigert

Middle Jurassic (Aalenian)

Opalinuston Formation

Germany

A member of the family Graphoceratidae.

Leviclymenia ramula[40]

Sp. nov

Valid

Hartenfels & Becker

Devonian (Famennian)

Morocco

Lobitoceras[41]

Gen. et comb. nov

Valid

Cooper

Early Cretaceous (Albian)

Angola

A member of the family Brancoceratidae. The type species is "Elobiceras" arietiforme Spath (1922); genus also includes L. decipiens (Spath, 1922), L. flexicostatum (Spath, 1922), L. irregulare (Spath, 1922), L. szajnochai (Spath, 1922) and L. spathianum (Haas, 1942).

Loyezia jaenensis[42]

Sp. nov

Valid

Vermeulen et al.

Early Cretaceous

Spain

A member of the family Crioceratitidae. Originally described as a species of Loyezia, but subsequently transferred to the genus Binelliceras by Vermeulen et al. (2019).[43]

Meekoceras bylundi[18]

Sp. nov

Valid

Jenks & Brayard

Early Triassic

United States
( Nevada)

Montelloites[18]

Gen. et sp. nov

Valid

Jenks & Brayard

Early Triassic

United States
( Nevada)

A member of the family Galfettitidae. Genus includes new species M. stephensi.

Moutaiceras[41]

Gen. et comb. nov

Valid

Cooper

Early Cretaceous (Albian)

Angola

A member of the family Brancoceratidae; a new genus for "Sharpeiceras" goliath Haas (1942).

Mullericeras gujiaoense[44]

Sp. nov

Valid

Dai et al.

Early Triassic (Induan)

Daye Formation

China

Mullericeras indusense[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Ceratite Marls

Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Mullericeratidae.

Mullericeras niazii[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Ceratite Marls

India[17]
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Mullericeratidae.

Mullericeras shigetai[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Ceratite Marls

India[17]
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Mullericeratidae.

Neocosmoceras eliasi[45]

Sp. nov

Valid

Vašíček, Skupien & Jagt

Early Cretaceous (early Berriasian)

Štramberk Limestone

Czech Republic

Neopetitclercia[46]

Gen. et sp. nov

Valid

Schweigert & Kapitzke

Late Jurassic (Kimmeridgian)

Impressamergel Formation

Germany

A member of the family Strigoceratidae belonging to the subfamily Phlycticeratinae. The type species is N. jantschkei.

Nodicoeloceras middlegatense[47]

Sp. nov

Valid

Caruthers et al.

Early Jurassic (Lower Toarcian)

United States
( Nevada)

Nodicoeloceras nevadaense[47]

Sp. nov

Valid

Caruthers et al.

Early Jurassic (Lower Toarcian)

United States
( Nevada)

Nodihungarites[21]

Gen. et comb. et sp. nov

Valid

Vörös

Middle Triassic (Anisian)

Vászoly Formation

Hungary

A member of the family Hungaritidae. The type species is "Hungarites" bocsarensis Arthaber (1903); genus also includes new species N. vinczei.

Orientosirenites[48]

Gen. et sp. et comb. nov

Valid

Konstantinov

Late Triassic (Carnian)

Russia

A member of the family Sirenitidae. The type species is O. bytschkovi; genus also includes O. yakutensis (Kiparisova).

Parafrechites cordeyi[30]

Sp. nov

Valid

Ji & Bucher

Middle Triassic (Anisian)

Canada
( British Columbia)

Parahungarites[21]

Gen. et comb. et sp. nov

Valid

Vörös

Middle Triassic (Anisian)

Vászoly Formation

Bosnia and Herzegovina
Hungary
Italy

A member of the family Ceratitidae. The type species is "Hungarites" arthaberi Diener (1899); genus also includes new species P. solyensis.

Parakellnerites stuerzenbaumi[21]

Sp. nov

Valid

Vörös

Middle Triassic (Anisian)

Vászoly Formation

Hungary

A member of the family Ceratitidae.

Pashtunites[16]

Gen. et comb. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

India
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Paranoritidae. Genus includes "Koninckites" kraffti Spath (1934).

Patrulia karachaica[49]

Sp. nov

Valid

Mitta in Mitta & Sherstyukov

Middle Jurassic (Bajocian)

Russia
( Karachay-Cherkessia)

A member of the family Stephanoceratidae.

Phylloceras (Gyrophylloceras)[50]

Nom. nov

Valid

Howarth in Énay & Howarth

Early Cretaceous

Tunisia

A subgenus of Phylloceras; a replacement name for Gyrophyllites Wiedmann (1963). The type species is Phylloceras lateumbilicatum Pervinquière (1907).

Phyllopachyceras reymenti[51]

Sp. nov

Valid

Riccardi

Early Cretaceous

Argentina

Physodoceras widerai[52]

Sp. nov

Valid

Scherzinger, Parent & Schweigert

Late Jurassic (Tithonian)

Hangende-Bankkalke Formation

Germany

A member of the family Aspidoceratidae.

Prodactylioceras westgatenses[47]

Sp. nov

Valid

Caruthers et al.

Early Jurassic (Upper Pliensbachian)

United States
( Nevada)

Proptychites wargalensis[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Lower Ceratite Limestone

India[17]
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Proptychitidae.

Protanisoceras hanaii[27]

Sp. nov

Valid

Obata & Matsukawa

Early Cretaceous

Miyako Group

Japan

Protengonoceras neolobitoides[53]

Sp. nov

Valid

Robert et al.

Early Cretaceous

Mexico

Protogrammoceras (Matteiceras) tipperi[47]

Sp. nov

Valid

Caruthers et al.

Early Jurassic (Upper Pliensbachian)

United States
( Nevada)

Protolongaeviceras[54][55]

Gen. et comb. nov

Knyazev, Meledina & Alifirov

Middle Jurassic (Callovian)

Russia

A member of Cardioceratidae. The type species is "Cadoceras (Streptocadoceras)" arcticoides Kiselev & Meledina (2004).

Pseudosageceras simplelobatum[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Ceratite Marls

India[17]
Pakistan

A member of Ceratitida belonging to the group Sagecerataceae and the family Hedenstroemiidae.

Reymenticoceras[56]

Gen. et comb. nov

Valid

Kennedy

Late Cretaceous (Turonian)

Colombia

A member of Mammitinae. A new genus for "Mammites" nodosoidesappelatus Etayo-Serna (1979).

Reynesocoeloceras corvalani[47]

Sp. nov

Valid

Caruthers et al.

Early Jurassic (Upper Pliensbachian)

United States
( Nevada)

Richardreymentella[36]

Gen. et comb. nov

Valid

Bulot, Frau & Pictet

Early Cretaceous (Late Aptian)

Argentina

A member of the family Acrioceratidae; a new genus for "Ancyloceras" patagonicum Stolley (1912).

Rotopericyclus chaplini[57]

Sp. nov

Valid

Work & Mason

Carboniferous (Tournaisian)

Borden Formation

United States
( Kentucky)

Rotopericyclus howardi[57]

Sp. nov

Valid

Work & Mason

Carboniferous (Tournaisian)

Borden Formation

United States
( Kentucky)

Sakartveloceras[24]

Gen. et comb. nov

Valid

Delanoy et al.

Early Cretaceous (Barremian)

Georgia
Iran
Turkmenistan

A member of Ancyloceratina belonging to the family Heteroceratidae. The type species is "Ammonites" securiformis Simonovich, Batsevich & Sorokin (1875); genus also includes "Colchidites" shaoriensis Djanélidzé (1926), "C." elissoae Kakabadze (1971), "C." tenuicostatus Kakabadze (1971) and "C." veleurensis Kakabadze (1971).

Stevensites[50]

Nom. nov

Valid

Énay in Énay & Howarth

Late Jurassic

  Nepal

A replacement name for Stevensia Énay (2009). The type species is "Kossmatia" desmidopthycha Uhlig (1910).

Stoppaniceras budaii[21]

Sp. nov

Valid

Vörös

Middle Triassic (Anisian)

Vászoly Formation

Hungary

A member of the family Ceratitidae.

Stoppaniceras hermanni[21]

Sp. nov

Valid

Vörös

Middle Triassic (Anisian)

Vászoly Formation

Hungary

A member of the family Ceratitidae.

Stoppaniceras rieberi[21]

Sp. nov

Valid

Vörös

Middle Triassic (Anisian)

Vászoly Formation

Hungary
Italy

A member of the family Ceratitidae.

Subacerites[16]

Gen. et sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Ceratite Marls

Pakistan

A member of Ceratitida of uncertain phylogenetic placement. Genus includes new species S. friski.

Sutneria armigerum[19]

Sp. nov

Valid

Énay

Late Jurassic (Kimmeridgian)

France

Titanites (Paratitanites)[33]

Subgen. et sp. nov

Valid

Kiselev in Kiselev & Rogov

Late Jurassic

Russia
( Ulyanovsk Oblast
Yaroslavl Oblast)

The type species of the subgenus is Titanites (Paratitanites) manipulocostatus.

Titanites (Pseudogalbanites)[33]

Subgen. et sp. et comb. nov

Valid

Kiselev in Kiselev & Rogov

Late Jurassic

Russia
( Yaroslavl Oblast)

The type species of the subgenus is Titanites (Pseudogalbanites) triceps; the subgenus also includes "Kerberites" mosquensis Mikhailov (1957).

Tolimacoceras[56]

Gen. et comb. nov

Valid

Kennedy

Late Cretaceous (Turonian)

Colombia

A member of Vascoceratidae. A new genus for "Paramammites" colombianus Etayo-Serna (1979).

Toxancyloceras canuti[58]

Sp. nov

Valid

Bert et al.

Early Cretaceous (Barremian)

France
Spain

A member of Ancyloceratidae.

Transcaspiites transitionis[37]

Sp. nov

Valid

Mitta

Early Cretaceous

Russia

A member of the family Himalayitidae.

Transcaspiites tscheffkini[37]

Sp. nov

Valid

Mitta

Early Cretaceous

Russia

A member of the family Himalayitidae.

Ussuridiscus ornatus[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Lower Ceratite Limestone

India[17]
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Mullericeratidae.

Ussuridiscus ventriosus[16]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

Lower Ceratite Limestone

India[17]
Pakistan

A member of Ceratitida belonging to the group Meekocerataceae and the family Mullericeratidae.

Valdedorsella kasei[27]

Sp. nov

Valid

Obata & Matsukawa

Early Cretaceous

Miyako Group

Japan

Vavilovites meridialis[17]

Sp. nov

Valid

Ware & Bucher in Ware et al.

Early Triassic

India

A member of Ceratitida belonging to the group Meekocerataceae and the family Paranoritidae.

Vocontiiceras[59]

Gen. et sp. nov

Valid

Diebold et al.

Late Cretaceous (Turonian)

Vocontian Basin

France

A member of the family Collignoniceratidae. Genus includes new species V. vocontiense.

Zittelites[50]

Nom. nov

Valid

Énay in Énay & Howarth

Late Jurassic

Spain

A replacement name for Zittelia Tavera Benitez (1985). The type species is "Ammonites" eudichotomus Zittel (1868).

Other cephalopods

Research

  • A study on the relationship between egg size, maximum size of embryonic shells and the size of the initial chamber in extant cephalopods, and on its implications for inferring reproductive strategies of fossil cephalopods, is published by Laptikhovsky, Nikolaeva & Rogov (2018).[60]
  • Mironenko (2018) proposes a new hypothesis about the habits and feeding strategies of endocerids, interpreting them as planktotrophic cephalopods, and arguing that the largest of endocerids were suspension feeders.[61]
  • Antarcticeras nordenskjoeldi Doguzhaeva in Doguzhaeva et al. (2017), originally assigned to a new cephalopod subclass Paracoleoidea and the new order Antarcticerida, is reinterpreted as a possible member of Oegopsida by Fuchs, Keupp & Klug (2018);[62] this reinterpretation is subsequently criticized and rejected by Doguzhaeva (2018).[63]
  • A study on the changes of body size of orthoconic cephalopods known from late Silurian to late Devonian sediments in Morocco is published by Pohle & Klug (2018).[64]
  • De Baets & Munnecke (2018) report presence of bimineralic, partially calcitic shell in two orthoconic nautiloids (members of the genus Dawsonoceras from the Silurian of Sweden, and members of the genus Spyroceras from the Devonian of Morocco), unlike extant and some fossil shelled cephalopods with an aragonitic shell wall, but similar to shells of some bivalves and gastropods.[65]
  • A study on the belemnites from the Lower Jurassic localities in Buttenheim (Germany) and Lixhausen (France), focusing on changes in spacing of septa that divided the phragmocone into chambers during the animals' growth, as well as their implications for the anatomy of belemnite hatchlings, is published by Wani et al. (2018).[66]
  • A study on belemnite rostra from two Toarcian belemnite battlefields in the Buttenheim and Teufelsgraben localities (Franconia, Germany), examining whether a rostrum size difference can be recognized between the studied samples, is published by Rita, De Baets & Schlott (2018).[67]
  • A pathological belemnite rostrum, indicative of the presence of a parasite during the lifetime of the belemnite, is described from the Cretaceous (Santonian) Bavnodde Greensand (Denmark) by Hoffmann et al. (2018).[68]
  • A study on the taxonomy, stratigraphy and palaeobiogeography of the late early Maastrichtian Belemnella lineage from the eastern part of the Roztocze Hills (Poland), comparing it with forms known from western Europe and easterly areas as far the peri-Aralian Sea area of Kazakhstan, and assessing their implications for inferring the taxonomic diversification and possible migratory patterns of members of the genus Belemnella in general, is published by Remin (2018).[69]
  • The oldest known fossil ink sac of the cuttlefish belonging to the genus Sepia, preserving original eumelanin and melanosomes, is described from the Miocene (Serravallian) deposits of the Vienna Basin by Košťák et al. (2018).[70]
  • Janiszewska et al. (2018) report aragonite preservation in ammonite and nautilid specimens from Upper Cretaceous siliceous limestone sections in Poland and Ukraine, and illustrate a broad spectrum of preservation of originally aragonitic structures in these specimens.[71]

New taxa

Name Novelty Status Authors Age Unit Location Notes Images

Acanthoteuthis foliorostris[72]

Sp. nov

Valid

Ippolitov

Middle Jurassic (Bathonian)

Russia

A belemnite belonging to the family Belemnotheutididae.

Aphyctoceras friesenbichlerae[73]

Sp. nov

Valid

Pohle & Klug

Devonian (early Eifelian)

Morocco

A nautiloid cephalopod belonging to the family Rutoceratidae.

Arbuckleoceras[74]

Gen. et comb. nov

Valid

Niko, Seuss & Mapes

Carboniferous (middle Pennsylvanian)

Boggy Formation

United States
( Oklahoma)

A member of Orthocerida. Genus includes A. tricamerae (Smith).

Armenoceras xizangense[75]

Sp. nov

Valid

Fang et al.

Middle Ordovician

Lhasai Formation

China

Astoceras floweri[73]

Sp. nov

Valid

Pohle & Klug

Devonian (late Emsian)

Morocco

A member of Orthocerida belonging to the family Sichuanoceratidae.

Barskovisella[76]

Gen. et 6 sp. et comb. nov

Valid

Ippolitov

Middle Jurassic (Bathonian)

Poland
Russia
 Switzerland

A belemnite belonging to the family Megateuthididae. The type species is B. issae; genus also includes B. pseudoishmensis, B. variabilis, B. barskovi, B. gracilis and B. renegata, as well as "Mesoteuthis" bajosicus Ivanova (1959) and "Nannobelus" parabellus Barskov in Mitta et al. (2004).

Calliconites? shimizui[77]

Sp. nov

Valid

Niko & Ehiro

Early Triassic (Olenekian)

Osawa Formation

Japan

A member of Aulacocerida belonging to the family Xiphoteuthididae.

Castellanibelus vaubellensis[78]

Sp. nov

Valid

Janssen

Early Cretaceous (Valanginian)

France
Spain
 Switzerland

A belemnite belonging to the family Duvaliidae.

Challinoria[79]

Gen. et sp. nov

Valid

Ippolitov & Desai

Middle Jurassic (Bathonian)

India

A belemnite belonging to the family Megateuthididae. Genus includes new species C. challinori.

Colorthoceras[80][81]

Gen. et 3 sp. nov

Valid

Mutvei & Mapes

Carboniferous (Gzhelian)

Graham Formation

United States
( Texas)

A coleoid with mixed orthocerid-coleoid characteristics. The type species is C. inflata; genus also includes new species C. tubulata and C. concavus.

Cyclopoceras[82]

Nom. nov

Valid

Mironenko

Devonian

Russia

A member of Discosorida belonging to the family Taxyceratidae; a replacement name for Cyclopites Zhuravleva (1962). The type species is "Gomphoceras" cyclops Wenjukoff (1886).

Cylindroteuthis gelida[83]

Sp. nov

Valid

de Lagausie in Dzyuba & de Lagausie

Middle Jurassic (Bajocian)

Yuryung-Tumus Formation

Russia

A belemnite belonging to the family Cylindroteuthididae.

Discoceras lindstroemi[84]

Sp. nov

Valid

Manda & Turek

Silurian (Wenlock)

Sweden

Discoceras stridsbergi[84]

Sp. nov

Valid

Manda & Turek

Silurian (Wenlock)

Sweden

Dolorthoceras boggyense[74]

Sp. nov

Valid

Niko, Seuss & Mapes

Carboniferous (middle Pennsylvanian)

Boggy Formation

United States
( Oklahoma)

Duvalia crassa[78]

Sp. nov

Valid

Janssen

Early Cretaceous (Valanginian)

Bulgaria
France
Slovakia
Spain
 Switzerland

A belemnite belonging to the family Duvaliidae.

Duvalia elongata[78]

Sp. nov

Valid

Janssen

Early Cretaceous (Valanginian)

France
Spain
 Switzerland

A belemnite belonging to the family Duvaliidae.

Duvalia kleini[78]

Sp. nov

Valid

Janssen

Early Cretaceous (Valanginian)

France
Romania
Spain

A belemnite belonging to the family Duvaliidae.

Duvalia superconstricta[78]

Sp. nov

Valid

Janssen

Early Cretaceous (Valanginian)

Crimean Peninsula
France
Spain
 Switzerland
Hungary?

A belemnite belonging to the family Duvaliidae.

Eocylindroteuthis gracilenta[85]

Sp. nov

Valid

Dzyuba & Schraer in Dzyuba et al.

Middle Jurassic (Bajocian)

United States
( Alaska)

A belemnite.

Eocylindroteuthis mariottii[86]

Sp. nov

Valid

Ippolitov

Middle Jurassic (Bajocian)

Russia
( Volgograd Oblast)

A belemnite.

Eocylindroteuthis riegrafi[85]

Sp. nov

Valid

Dzyuba & Schraer in Dzyuba et al.

Middle Jurassic (Bajocian)

United States
( Alaska)

A belemnite.

Eocylindroteuthis weisi[86]

Sp. nov

Valid

Ippolitov

Middle Jurassic (Bajocian)

Russia
( Volgograd Oblast)

A belemnite.

Eocylindroteuthis yarkovi[86]

Sp. nov

Valid

Ippolitov

Middle Jurassic (Bajocian)

Russia
( Volgograd Oblast)

A belemnite.

Geidoloceras hebeiseni[73]

Sp. nov

Valid

Pohle & Klug

Devonian (Pragian)

Morocco

A member of Pseudorthocerida belonging to the family Pseudorthoceratidae.

Hastites orphana[86]

Sp. nov

Valid

Ippolitov

Middle Jurassic (Bajocian)

Russia
( Volgograd Oblast)

A belemnite.

"Hibolithes" lebresensis[78]

Sp. nov

Valid

Janssen

Early Cretaceous (Valanginian)

Vocontian Basin

France

A belemnite belonging to the family Belemnopseidae.

Homaloteuthis volgogradensis[86]

Sp. nov

Valid

Ippolitov

Middle Jurassic (Bajocian)

Russia
( Volgograd Oblast)

A belemnite.

Idahoteuthis[87]

Gen. et sp. nov

Valid

Doguzhaeva & Brayard in Doguzhaeva et al.

Early Triassic (Olenekian)

Thaynes Group

United States
( Idaho)

A member of Coleoidea, possibly belonging to the order Myopsida. The type species is I. parisiana.

Infundibuloceras kroegeri[73]

Sp. nov

Valid

Pohle & Klug

Devonian (Emsian)

Morocco

A member of Orthocerida belonging to the family Orthoceratidae.

Mesonaedyceras[73]

Gen. et sp. nov

Valid

Pohle & Klug

Devonian (Eifelian)

Morocco

A member of Oncocerida belonging to the family Naedyceratidae. Genus includes new species M. laterobliquum.

Miyagiteuthis[77]

Gen. et comb. nov

Valid

Niko & Ehiro

Late Triassic (early Norian)

Chonomori Formation

Japan

A member of Aulacocerida belonging to the family Aulacoceratidae. The type species is "Dictyoconites" nipponicus Shimizu & Mabuti (1941).

Nebraskaconus[88]

Gen. et sp. nov

Valid

Mapes & Doguzhaeva

Carboniferous (Kasimovian)

Stark Shale

United States
( Nebraska)

A member of Coleoidea. Genus includes new species N. whitei.

Oklaconus[89]

Gen. et sp. nov

Valid

Doguzhaeva & Mapes

Carboniferous (Moscovian)

Wewoka Shale

United States
( Oklahoma)

A bactritoid-like coleoid. Genus includes new species O. okmulgeensis.

Pabianiconus[88]

Gen. et sp. nov

Valid

Mapes & Doguzhaeva

Carboniferous (Kasimovian)

Stark Shale

United States
( Nebraska)

A member of Coleoidea. Genus includes new species P. starkensis.

Pachtoceras laghdadense[73]

Sp. nov

Valid

Pohle & Klug

Devonian (late Givetian)

Morocco

A member of Oncocerida belonging to the family Poterioceratidae.

Pachyteuthis mittai[72]

Sp. nov

Valid

Ippolitov

Middle Jurassic (Bathonian)

Russia

A belemnite belonging to the family Cylindroteuthididae.

Paramegateuthis ovata[83]

Sp. nov

Valid

de Lagausie & Dzyuba in Dzyuba & de Lagausie

Middle Jurassic (Bajocian)

Yuryung-Tumus Formation

Norway
Russia

A belemnite belonging to the family Megateuthididae.

Paramegateuthis schurygini[83]

Sp. nov

Valid

Dzyuba in Dzyuba & de Lagausie

Middle Jurassic (Bathonian)

Yuryung-Tumus Formation

Russia

A belemnite belonging to the family Megateuthididae.

Parapassaloteuthis francoizbreutae[90]

Sp. nov

Valid

Weis & Mariotti

Early Jurassic (Toarcian)

France

A belemnite.

Patelloctopus[91]

Gen. et sp. nov

Valid

Fuchs & Schweigert

Late Jurassic (Kimmeridgian)

Nusplingen Limestone

Germany

A member of the stem group of the Octopoda or a stem-incirrate. Genus includes new species P. ilgi.

Phatthalungoceras[92]

Gen. et sp. nov

Valid

Tongtherm & Nabhitabhata

Middle Triassic (Anisian)

Chaiburi Formation

Thailand

A member of the family Orthoceratidae. The type species is P. srisuki.

Pseudendoplectoceras angustum[73]

Sp. nov

Valid

Pohle & Klug

Devonian (Pragian)

Morocco

A member of Discosorida belonging to the family Phragmoceratidae.

Pseudosimobelus[85]

Gen. et sp. nov

Valid

Dzyuba & Schraer in Dzyuba et al.

Middle Jurassic (Bajocian)

United States
( Alaska)

A belemnite. Genus includes new species P. tuxedniensis.

Sepia fabianschwankei[93]

Sp. nov

Valid

Košták & Jagt

Miocene

Twistringen Beds

Germany

A species of Sepia.

Smithorthoceras[74]

Gen. et comb. nov

Valid

Niko, Seuss & Mapes

Carboniferous (middle Pennsylvanian)

Boggy Formation

United States
( Oklahoma)

A member of Orthocerida. Genus includes S. unicamera (Smith).

Starkites[88]

Gen. et sp. nov

Valid

Mapes & Doguzhaeva

Carboniferous (Kasimovian)

Stark Shale

United States
( Nebraska)

A member of Coleoidea. Genus includes new species S. compressus.

Subormoceras asymmetricum[73]

Sp. nov

Valid

Pohle & Klug

Devonian (Pragian)

Morocco

A member of Pseudorthocerida belonging to the family Pseudorthoceratidae.

Subtheoceras[73]

Gen. et sp. nov

Valid

Pohle & Klug

Devonian (Pragian)

Morocco

A member of Orthocerida belonging to the family Orthoceratidae. Genus includes new species S. striatum.

Sulphurnites[74]

Gen. et sp. nov

Valid

Niko, Seuss & Mapes

Carboniferous (middle Pennsylvanian)

Boggy Formation

United States
( Oklahoma)

A member of Orthocerida. Genus includes new species S. taffi.

Unklesbayoceras[74]

Gen. et sp. nov

Valid

Niko, Seuss & Mapes

Carboniferous (middle Pennsylvanian)

Boggy Formation

United States
( Oklahoma)

A member of Orthocerida. Genus includes new species U. striatulum.

Gastropods

Research

New taxa

Name Novelty Status Authors Age Unit Location Notes Images

Acirsa sceauxsensis[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Acirsa.

Adelphotectonica bieleri[99]

Sp. nov

Valid

Ceulemans, Van Dingenen & Landau

Pliocene (Zanclean)

France

A member of the family Architectonicidae.

Aegopinella depressula[100]

Sp. nov

Valid

Harzhauser & Neubauer

Miocene

Poland

A species of Aegopinella.

Allmoniella[101]

Gen. et sp. et comb. nov

Valid

Dolin & Dockery

Eocene (Bartonian)

Cook Mountain Formation

United States
( Louisiana
Mississippi)

A member of Ovulidae. Genus includes new species A. magnolia, as well as "Cypraea" vaughani Johnson (1899).

Alvania acuticarinata[98]

Nom. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania; a replacement name for Delphinula carinata Millet (1854).

Alvania armata[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania couffoni[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania fezata[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania globosa[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania insulsa[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania josephineae[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania lachrimula[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania milleti[98]

Nom. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania; a replacement name for Rissoa suturalis Millet (1865).

Alvania milletispinosa[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania miocalasi[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania miolactea[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania napoleoni[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania parasusieae[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania redoniana[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania renauleauensis[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania subtiliangulosa[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania susieae[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania tenuisculpturata[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Alvania turtaudierei[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Alvania.

Amalda acutapex[102]

Sp. nov

Valid

Raven & Recourt

Miocene

Brunei

A species of Amalda.

Amalda bruneiana[103]

Sp. nov

Valid

Harzhauser et al.

Miocene (Tortonian)

Seria Formation

Brunei

A species of Amalda.

Amalda miriensis[102]

Sp. nov

Valid

Raven & Recourt

Miocene

Malaysia

A species of Amalda.

Angaria complanata[104]

Sp. nov

Valid

Gain, Belliard & Le Renard

Eocene

France

A species of Angaria.

Angaria constantinensis[104]

Sp. nov

Valid

Gain, Belliard & Le Renard

Eocene

France

A species of Angaria.

Angaria nigellensis[104]

Sp. nov

Valid

Gain, Belliard & Le Renard

Eocene

France

A species of Angaria.

Angaria scutellata[104]

Sp. nov

Valid

Gain, Belliard & Le Renard

Eocene

France

A species of Angaria.

Aphanitoma marqueti[99]

Sp. nov

Valid

Ceulemans, Van Dingenen & Landau

Pliocene (Zanclean)

France

A species of Aphanitoma.

Aporrhais sauditica[105]

Sp. nov

Valid

Ferrari et al.

Jurassic

Saudi Arabia

A species of Aporrhais.

Archierato antonioi[106]

Sp. nov

Valid

Fehse & Villacampa

Miocene

United States
( Florida)

A member of the family Eratoidae.

Archimediella sancticlementensis[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

Architectonica beetsi[103]

Sp. nov

Valid

Harzhauser et al.

Miocene (Tortonian)

Seria Formation

Brunei

A species of Architectonica.

Asthenotoma lanceolata[99]

Sp. nov

Valid

Ceulemans, Van Dingenen & Landau

Pliocene (Zanclean)

France

A species of Asthenotoma.

Ataxocerithium turbineum[98]

Sp. nov

Valid

Landau, Ceulemans & Van Dingenen

Miocene (Tortonian)

France

A species of Ataxocerithium.

Athleta (Volutospina) delvallei[107]

Sp. nov

Valid

Astibia, Merle & Pacaud in Astibia et al.

Eocene (Bartonian-?early Priabonian)

Ardanatz Sandstone
Ilundain Marl Formation

Spain

A species of Athleta.

Athleta nikolaji[108]

Sp. nov

Valid

Schnetler & Nielsen

Paleocene (Selandian)

Denmark

A species of Athleta.

Bela falbalae[99]

Sp. nov

Valid

Ceulemans, Van Dingenen & Landau

Pliocene (Zanclean)

France

A species of Bela.

Bernaya amandula[109]

Sp. nov

Valid

Pacaud

Eocene (Bartonian)

France

A species of Bernaya.