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Trematoceras osawaense

Cephalopoda - Pseudorthocerida - Orthoceratoidea

Taxonomy
Trematoceras osawaense was named by Niko and Ehiro (2024). Its type specimen is IGPS 112844, a shell, and it is a 3D body fossil. Its type locality is Locality 1a, Nameshi-zawa Valley, south of Asadanuki, which is in a Spathian marine mudstone in the Osawa Formation of Japan.

Sister species lacking formal opinion data
T. memorabile, T. moderatum, T. potissimum, T. spitiense
Entered
by M. Clapham on 2025-02-27; modified by M. Clapham on 2025-02-27

Synonymy list
YearName and author
2024Trematoceras osawaense Niko and Ehiro p. 18 figs. 1C-J

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classCephalopodaCuvier 1797
familyOrthoceratoidea()
orderPseudorthocerida
familyTrematoceratidaeZakharov 1996
genusTrematocerasEichwald 1851
speciesosawaense

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Trematoceras osawaense Niko and Ehiro 2024
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragonitec
Environment: marinec
Locomotion: fast-movingc
Life habit: nektonicc
Diet: carnivorec
Vision: well-developedc
Created: 2004-02-28 11:51:48
Modified: 2023-08-18 17:28:37
Source: c = class
Reference: Kiessling 2004

Age range: Spathian or 248.10000 to 246.70000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Spathian248.1 - 246.7Japan Trematoceras osawaense (type locality: 224865)