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Astrocrinus
Taxonomy
Astrocrinus was named by Morris (1843) [Sepkoski's age data: C Vise-u Sepkoski's reference number: 1066].
It was corrected as Asterocrinus by Paul et al. (2021).
It was assigned to Fissiculata by Sepkoski (2002); to Blastoidea by Bauer (2018); and to Astrocrinidae by Beaver et al. (1967) and Paul et al. (2021).
It was corrected as Asterocrinus by Paul et al. (2021).
It was assigned to Fissiculata by Sepkoski (2002); to Blastoidea by Bauer (2018); and to Astrocrinidae by Beaver et al. (1967) and Paul et al. (2021).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1840 | Astrocrinites Conrad |
| 1843 | Astrocrinus Morris p. 42 |
| 1967 | Astrocrinus Beaver et al. p. S413 |
| 2002 | Astrocrinites Sepkoski |
| 2002 | Astrocrinus Sepkoski |
| 2018 | Asterocrinus Bauer pp. Appendix 3 |
| 2021 | Asterocrinus Paul et al. p. 2 |
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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. †Astrocrinus Morris 1843
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†Astrocrinus benniei Etheridge 1878
†Astrocrinus tetragonus Austin and Austin, Jr. 1843
Invalid names: Astrocrinites Conrad 1840 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. R. C. Paul et al. 2021 | Stemless fissiculates with a spiny, tetralobate theca, with a plane of bilateral symmetry through the D radius and AB inter-radius; with the D ambulacrum short and broad and the other four long and narrow; with a single basal plate. |