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Nucleocrinus
Taxonomy
Nucleocrinus was named by Conrad (1842) [Sepkoski's age data: D Eife D Give-u Sepkoski's reference number: 2,523]. It is not extant.
It was assigned to Nucleocrinidae by Beaver et al. (1967), Waters and Horowitz (1993); and to Spiraculata by Sepkoski (2002).
It was assigned to Nucleocrinidae by Beaver et al. (1967), Waters and Horowitz (1993); and to Spiraculata by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1842 | Nucleocrinus Conrad p. 280 |
| 1967 | Nucleocrinus Beaver et al. p. S432 |
| 1993 | Nucleocrinus Waters and Horowitz p. 210 |
| 2002 | Nucleocrinus 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. †Nucleocrinus Conrad 1842
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†Nucleocrinus bosei Sumrall et al. 2009
†Nucleocrinus elegans Conrad 1842
†Nucleocrinus obovatus Barris 1883
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Aberhan 1992, Aberhan et al. 2004 | |||||
Age range: Givetian or 387.95000 to 382.31000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Devonian | USA (Indiana) | N. angularis (11101) | |
| Givetian | USA (Michigan) | N. elegans (39830) | |
| Givetian | USA (Ohio) | N. elegans (38463 38464 38465) | |
| Givetian | USA (Kentucky) | N. bosei (211438) | |
| Givetian | USA (Iowa) | N. obovatus (230524) | |
| Givetian | USA (New York) | N. sp. (10110) |