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Calaurops canadensis
Taxonomy
Ecculiomphalus canadensis was named by Billings (1861). It is not a trace fossil.
It was recombined as Eccyliomphalus canadensis by Ulrich and Scofield (1897); it was recombined as Calaurops canadensis by Whitfield (1886) and Wagner (2023).
It was recombined as Eccyliomphalus canadensis by Ulrich and Scofield (1897); it was recombined as Calaurops canadensis by Whitfield (1886) and Wagner (2023).
Synonymy list
Year | Name and author |
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1861 | Ecculiomphalus canadensis Billings p. 320 fig. 4 |
1886 | Calaurops canadensis Whitfield p. 315 figs. txt. f. 315 |
1897 | Eccyliomphalus canadensis Ulrich and Scofield p. 1023 |
2023 | Calaurops canadensis Wagner p. 4160 |
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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.
†Calaurops canadensis Billings 1861
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Diagnosis
Reference | Diagnosis | |
---|---|---|
E. Billings 1861 | This species consists of a simple curved tube usually about three inches in length. The larger extremity for about two inches is nearly straight, and the cross section nearly circular. The remainder, to the point, curved so as to make half a whorl of an inch across, or a little less. In this part the tube is not cylindrical but flattened laterally. In most of the specimens the sides are more sharply rounded than the dorsal or ventral aspects. In none that I have seen is the shell preserved, so that the surface characters remain unknown. Some of the fragments shew that the shell near the smaller end is greatly thickened. |