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Drepanaster
Taxonomy
Protaster (Drepanaster) was named by Whidborne (1898). Its type is Drepanaster grayae.
It was reranked as Drepanaster by Spencer (1934), Owen (1965), Spencer and Wright (1966), Kesling (1970), Hotchkiss (1993), Sepkoski (2002) and Dean Shackleton (2005).
It was assigned to Protaster by Whidborne (1898); to Oegophiurida by Sepkoski (2002); and to Protasteridae by Spencer (1934), Owen (1965), Spencer and Wright (1966), Kesling (1970), Hotchkiss (1993) and Dean Shackleton (2005).
It was reranked as Drepanaster by Spencer (1934), Owen (1965), Spencer and Wright (1966), Kesling (1970), Hotchkiss (1993), Sepkoski (2002) and Dean Shackleton (2005).
It was assigned to Protaster by Whidborne (1898); to Oegophiurida by Sepkoski (2002); and to Protasteridae by Spencer (1934), Owen (1965), Spencer and Wright (1966), Kesling (1970), Hotchkiss (1993) and Dean Shackleton (2005).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1898 | Protaster (Drepanaster) Whidborne p. 208 |
| 1934 | Drepanaster Spencer pp. 492-493 |
| 1965 | Drepanaster Owen p. 550 |
| 1966 | Drepanaster Spencer and Wright p. U87 |
| 1970 | Drepanaster Kesling p. 74 |
| 1993 | Drepanaster Hotchkiss p. 64 |
| 2002 | Drepanaster Sepkoski |
| 2005 | Drepanaster Dean Shackleton p. 91 |
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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. †Drepanaster Whidborne 1898
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†Drepanaster grayae Spencer 1934
†Drepanaster scabrosus Whidborne 1896
†Drepanaster schohariae Ruedemann 1912
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Dean Shackleton 2005 | Ambulacral muscle fields developed equally on proximal and distal edges giving well-shaped ambulacral aboral morphology. |