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Selkirkia major
Taxonomy
Orthotheca major was named by Walcott (1908) [not the original combination]. Its type specimen is USNM 96542 (Tube) and is a compression fossil. It is the type species of Cambrorhytium, Selkirkia.
It was recombined as Selkirkia major by Walcott (1911); it was recombined as Cambrorhytium major by Conway Morris and Robison (1988) and Zhang and Hua (2005).
It was recombined as Selkirkia major by Walcott (1911); it was recombined as Cambrorhytium major by Conway Morris and Robison (1988) and Zhang and Hua (2005).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1908 | Orthotheca major Walcott pp. 243, 246 figs. plate 1, fig 11 |
| 1911 | Selkirkia gracilis Walcott pp. 120, 122-123 figs. plate 19, fig 9 |
| 1911 | Selkirkia major Walcott p. 120 figs. Plate 19, fig. 6 |
| 1911 | Selkirkia gracilis Walcott p. 122 figs. Plate 19, fig. 9 |
| 1988 | Cambrorhytium major Conway Morris and Robison p. 18 figs. Figures 12-15 |
| 2005 | Cambrorhytium major Zhang and Hua p. 3 |
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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.
†Selkirkia major Walcott 1908
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. Conway Morris and R. A. Robison 1988 | Tube w ith variable rate of expansion and transverse annulations, length ranging to 65 mm, original composition organic and probably unmineralized. Soft parts poorly known, consisting of possible tentacular structures extending from aperture of tube |