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Neopalaeaster
Taxonomy
Neopalaeaster was named by Schuchert (1914) [Sepkoski's age data: C Vise-l Sepkoski's reference number: 2]. Its type is Palaeaster crawfordsvillensis. It is the type genus of Neopalaeasteridae.
It was assigned to Phanerozonia by Schuchert (1914); to Pustulosida by Sepkoski (2002); to Neopalaeasteridae by Schuchert (1915), Spencer and Wright (1966) and Blake and Elliott (2003); and to Palaeasteridae by Blake (2018).
It was assigned to Phanerozonia by Schuchert (1914); to Pustulosida by Sepkoski (2002); to Neopalaeasteridae by Schuchert (1915), Spencer and Wright (1966) and Blake and Elliott (2003); and to Palaeasteridae by Blake (2018).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1914 | Neopalaeaster Schuchert p. 26 |
| 1915 | Neopalaeaster Schuchert pp. 134-135 |
| 1966 | Neopalaeaster Spencer and Wright p. U51 |
| 2002 | Neopalaeaster Sepkoski |
| 2003 | Neopalaeaster Blake and Elliott p. 481 |
| 2018 | Neopalaeaster Blake p. 39 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. B. Blake and D. R. Elliott 2003 | Primary circlet weakly enlarged; interradials, radials approximately equisized, weakly transversely elongate; "extraneous" or "x" ossicles not developed. Carinals in single series, ossicles abutted longitudinally; lateral series present. Marginals in single series, ossicles tabular, transversely oriented; marginals, adambulacrals together forming rounded arm margin. Ventral surface unknown. |