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Imbricatoceras subundulatum

Cephalopoda - Orthocerida - Orthoceratidae

Taxonomy
Orthoceras subundulatum was named by Portlock (1843). Its type specimen is GSM 54308, a shell, and it is a 3D body fossil. Its type locality is Killey Bridge Fm. locality 1, NE of Pomeroy, which is in a Richmondian offshore mudstone/siltstone in the Killey Bridge Formation of the United Kingdom.

It was recombined as Tyrioceras subundulatum by Evans (1993); it was recombined as Imbricatoceras subundulatum by Holland (1992) and Holland (2000).

Sister species lacking formal opinion data
I. ascendens

Synonymy list
YearName and author
1843Orthoceras subundulatum Portlock p. 373 figs. 2 Pl. 28
1992Imbricatoceras subundulatum Holland p. 123
1993Tyrioceras subundulatum Evans p. 176 figs. 7, 13
2000Imbricatoceras subundulatum Holland p. 178 fig. 11

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classCephalopodaCuvier 1797
subclassOrthoceratoidea(M'Coy 1844)
orderOrthoceridaKuhn 1940
familyOrthoceratidaeM'Coy 1844
subfamilyMichelinoceratinaeFlower 1945
genusImbricatoceras
speciessubundulatum()

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.

†Imbricatoceras subundulatum Portlock 1843
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Diagnosis
No diagnoses are available