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Emphereaster
Taxonomy
Emphereaster was named by Blake and Elliott (2003). It is not extant. Its type is Emphereaster missouriensis.
It was assigned to Neopalaeasteridae by Blake and Elliott (2003); and to Permasteridae by Blake (2018).
It was assigned to Neopalaeasteridae by Blake and Elliott (2003); and to Permasteridae by Blake (2018).
Species
E. missouriensis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2003 | Emphereaster Blake and Elliott p. 483 |
| 2018 | Emphereaster Blake p. 48 |
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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. †Emphereaster Blake and Elliott 2003
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†Emphereaster missouriensis Blake and Elliott 2003
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. B. Blake and D. R. Elliott 2003 | Primary circlet ossicles enlarged relative to adjacent ossicles; interradials, radials, approximately equisized; "extraneous" or "x" ossicles not recognized. carinals in single series, ossicles not abutted; no lateral series. Marginals in single series, moderately robust, equidimensional, cuneate, forming angular arm margin; adambulacral inset, not part of arm margin. |