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Treptoceras yokoyamai

Cephalopoda - Orthocerida - Proteoceratidae

Taxonomy
Loxoceras yokoyamai was named by Kobayashi (1927). It is not extant. Its type specimen is UMUT PM0016, a shell.

It was recombined as Sactoceras yokoyamai by Kobayashi (1934); it was recombined as Ormoceras yokoyamai by Yun (1999); it was recombined as Treptoceras yokoyamai by Niko (2002).

Synonymy list
YearName and author
1927Loxoceras yokoyamai Kobayashi pp. 186, 187 figs. 9a-c Pl. 18
1934Sactoceras yokoyamai Kobayashi pp. 439, 440 figs. Pls. 27, 28
1999Ormoceras yokoyamai Yun p. 214
2002Treptoceras yokoyamai Niko p. 121 fig. 1

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classCephalopodaCuvier 1797
subclassOrthoceratoideaZhuravleva 1994
orderOrthoceridaKuhn 1940
familyProteoceratidae
genusTreptocerasFlower 1942
speciesyokoyamai(Kobayashi 1927)

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.

Diagnosis
No diagnoses are available