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Nucleocrinidae
Taxonomy
Nucleocrinidae was named by Bather (1899). It is not extant.
It was assigned to Spiraculata by Beaver et al. (1967); and to Nucleocrinida by Waters and Horowitz (1993).
It was assigned to Spiraculata by Beaver et al. (1967); and to Nucleocrinida by Waters and Horowitz (1993).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1899 | Nucleocrinidae Bather p. 920 |
| 1967 | Nucleocrinidae Beaver et al. p. S432 |
| 1993 | Nucleocrinidae Waters and Horowitz p. 211 |
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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. †Nucleocrinidae Bather 1899
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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 et al. 2004, Aberhan 1992 | |||||
Age range: base of the Southwoodian to the top of the Tioughniogan or 393.47000 to 382.31000 Ma
Collections (19 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Eifelian | USA (Missouri) | Nucleocrinus verneuili (230503) | |
| Eifelian | USA (Ohio) | Nucleocrinus verneuili (230500) | |
| Southwoodian | USA (Indiana) | Nucleocrinus verneuili (230505) | |
| Middle Devonian | USA (Indiana) | Nucleocrinus angularis (11101) | |
| Middle Devonian | USA (New York) | Placoblastus sp. (91277 91278) | |
| Givetian | USA (Michigan) | Nucleocrinus elegans, Placoblastus obovatus (39830) | |
| Givetian | USA (Missouri) | Nucleocrinus verneuili (230501 230502) | |
| Givetian | USA (Kentucky) | Nucleocrinus bosei (211438) | |
| Givetian | USA (Iowa) | Nucleocrinus obovatus (230524) | |
| Givetian | USA (New York) | Nucleocrinus sp. (10110) Placoblastus lucina (5659) Placoblastus sp. (9002 96210) | |
| Givetian | USA (Ohio) | Nucleocrinus elegans (38463 38464 38465) | |
| Tioughniogan | USA (New York) | Placoblastus angularis, Placoblastus eriensis (230508) |