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Crateraster
Taxonomy
Crateraster was named by Spencer (1913) [Sepkoski's age data: K Albi-m T Dani Sepkoski's reference number: 772,1265]. It is not extant. Its type is Asterias quinqueloba.
It was assigned to Goniasteridae by Spencer (1913), Spencer and Wright (1966) and Blake and Reid (1998); and to Valvatida by Sepkoski (2002).
It was assigned to Goniasteridae by Spencer (1913), Spencer and Wright (1966) and Blake and Reid (1998); and to Valvatida by Sepkoski (2002).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1913 | Crateraster Spencer |
| 1928 | Austinaster Adkins p. 266 |
| 1966 | Crateraster Spencer and Wright p. U61 |
| 1998 | Crateraster Blake and Reid p. 515 |
| 2002 | Crateraster Sepkoski |
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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. †Crateraster Spencer 1913
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†Crateraster debrisi Breton 1992
†Crateraster dubusi Breton 1992
†Crateraster favosus Spencer 1913
†Crateraster fourayae Breton 1992
†Crateraster grignonensis Valette 1925
†Crateraster lamberti Valette 1925
†Crateraster multiplacus Schulz and Weitschat 1981
†Crateraster poritoides Desmoulins 1832
†Crateraster quinqueloba Goldfuss 1833
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Invalid names: Pentagonaster megalomax Sladen 1891 [synonym]
†Crateraster reticulatus Schulz and Weitschat 1981
†Crateraster rotundus Schulz and Weitschat 1981
†Crateraster texensis Adkins and Winton 1920
†Teichaster favosus retiformis Spencer 1913
Invalid names: Austinaster Adkins 1928 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. S. Adkins 1928 (Austinaster) | Outline stellate-pentagonal, interradial arc moderatelly deep. Form depressed, disk thin over center, thickened at marginalia. Infero- and superomarginalia set at angle to each other, the inferior ones projecting, reducing gradually in size toward tip of ray. Both marginalia tuberculate tubercules of medium size and somewhat irregularly distributed. Marginalia devoid of ridge, grooves or other irregularities, and margins not depressed. Actinal interradial plates triangular, large. Abactinal plates small, hexagonal. |