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Sinopetalocrinus
Taxonomy
Sinopetalocrinus was named by Mu and Lin (1987) [Sepkoski's age data: S Ldov]. It is not extant.
It was assigned to Cladida by Sepkoski (2002); and to Petalocrinidae by Mao et al. (2015).
It was assigned to Cladida by Sepkoski (2002); and to Petalocrinidae by Mao et al. (2015).
Synonymy list
| Year | Name and author |
|---|---|
| 1987 | Sinopetalocrinus Mu and Lin |
| 2002 | Sinopetalocrinus Sepkoski |
| 2015 | Sinopetalocrinus Mao et al. |
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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.
G. †Sinopetalocrinus Mu and Lin 1987
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Y. Y. Mao et al. 2015 | Horseshoe-shaped articular facets; fused brachials expand in width rapidly
for short distance, then are parallel sided and finally a convex distal margin; as many as 40 distal ambulacra, adjacent arms not in lateral contact, ambulacral grooves on oral and aboral surface. |