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Protrachyceras sikanianum
Taxonomy
Protrachyceras sikanianus was named by McLearn (1930). Its type specimen is GSC 9044 and is a 3D body fossil. Its type locality is GSC 9131, Beattie Ledge, which is in a Longobardian marine siltstone in the Toad Formation of Canada.
It was corrected as Protrachyceras sikanianum by Tozer (1994).
It was corrected as Protrachyceras sikanianum by Tozer (1994).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
Year | Name and author |
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1930 | Protrachyceras sikanianus McLearn p. 4 figs. Pl 1, fig 1 |
1930 | Protrachyceras zauwae McLearn p. 5 figs. Pl 1, fig 4 |
1994 | Protrachyceras sikanianum Tozer p. 146 figs. Pl 71, figs 6-8; pl 75, figs 12,13; pl 77, figs 6a-c; pl 79, figs 14,15; text-figs 54e, 58g, 60d |
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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.
†Protrachyceras sikanianum McLearn 1930
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Invalid names: Protrachyceras zauwae McLearn 1930 [synonym]
Diagnosis
No diagnoses are available