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Anisocrinidae
Taxonomy
Anisocrinidae was named by Eckert and Brett (2001). It is not extant. Its type is Anisocrinus.
It was assigned to Icthyocrinacea by Ausich and Copper (2010); and to Sagenocrinitacea by Cole et al. (2025).
It was assigned to Icthyocrinacea by Ausich and Copper (2010); and to Sagenocrinitacea by Cole et al. (2025).
Subtaxa
Anisocrinus (type genus), Anticosticrinus
Synonymy list
| Year | Name and author |
|---|---|
| 2001 | Anisocrinidae Eckert and Brett |
| 2010 | Anisocrinidae Ausich and Copper p. 62 |
| 2025 | Anisocrinidae Cole et al. |
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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.
Fm. †Anisocrinidae Eckert and Brett 2001
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G. †Anisocrinus
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†Anisocrinus interradiatus Angelin 1878
†Anisocrinus prinstaensis Ausich and Copper 2010
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. R. Cole et al. 2025 | Sagenocrinitaceans with short ovoid crown; infrabasals visible in lateral view; radianal typically present, pentagonal, situated directly below C ray radial; anal X succeeded by additional plates in some instances; distal arms isotomous to slightly heterotomous in some instances; interbrachials absent or consisting of one to several plates in each interray; fixed intrasecundibrachials and intratertibrachials may be present (diagnosis emended from Eckert and Brett 2001). |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, p = phylum | |||||
| References: Aberhan 1992, Hendy et al. 2009, Kiessling 2004, Aberhan et al. 2004 | |||||
Age range: base of the Hirnantian to the top of the Wenlock or 445.20000 to 426.70000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Hirnantian | Canada (Quebec) | Anisocrinus prinstaensis (202379) Anticosticrinus natiscotecensis (241653) | |
| Wenlock | USA (Indiana) | Anisocrinus laurelensis (26771) |