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Hemicrinus
Taxonomy
Hemicrinus was named by Orbigny (1850) [Sepkoski's age data: J Tith-l K Albi Sepkoski's reference number: 1066]. It is not extant. Its type is Hemicrinus astierianus. It is the type genus of Hemicrinidae.
It was assigned to Hemicrinidae by Rasmussen (1961); to Cyrtocrinida by Sepkoski (2002); and to Sclerocrinidae by Hess and Messing (2011).
It was assigned to Hemicrinidae by Rasmussen (1961); to Cyrtocrinida by Sepkoski (2002); and to Sclerocrinidae by Hess and Messing (2011).
Species
H. astierianus (syn. Cyrtocrinus granulatus) (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1850 | Hemicrinus Orbigny |
| 1961 | Hemicrinus Rasmussen p. 233 |
| 2002 | Hemicrinus Sepkoski |
| 2011 | Hemicrinus Hess and Messing p. 188 |
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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. †Hemicrinus Orbigny 1850
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†Hemicrinus astierianus d'Orbigny 1850
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Invalid names: Cyrtocrinus granulatus Jaekel 1891 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, p = phylum | |||||
| References: Hendy et al. 2009, Aberhan 1992, Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: Early/Lower Hauterivian or 136.40000 to 130.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Hauterivian | France | H. astierianus (59653) | |
| Early/Lower Hauterivian | Spain | H. asterianus (55528) |