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Ctenophoraster downeyae
Taxonomy
Ctenophoraster downeyae was named by Blake and Zinsmeister (1979). It is not extant. It was considered monophyletic by Blake and Zinsmeister (1979).
Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Ctenophoraster downeyae Blake and Zinsmeister p. 1150 figs. pl. 1 |
| 1988 | Ctenophoraster downeyae Blake and Zinsmeister p. 494 fig. 3.1 |
| 1998 | Ctenophoraster downeyae Blake and Aronson p. 345 fig. 7.6 |
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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.
†Ctenophoraster downeyae Blake and Zinsmeister 1979
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. B. Blake and W. J. Zinsmeister 1979 | A large Ctenophoraster species bearing a single prominent spine on each superomarginal, the remainder of the ossicle covered by stout spinelets. Paxillae arranged in regular rows of approximately 16 ossicles across the arm near the base, with paxillary pedicellariae probably absent. Inferomarginals probably absent. Inferomarginals probably with 3 lateral and 2 actinal surface spine rows. Actinolaterals relatively few beyong row adjacent to furrow, approximately 10 in a specimen of r (estimated) = 12mm. Ambulacral lacks progress for muscle band extending between superambulacral and dorsal adradial ends of ambulacral. |