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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Cromyocrinus grandis
Taxonomy
Cromyocrinus grandis was named by Mather (1915). It is not extant. Its type locality is Brentwood Station 145, which is in a Morrowan marine limestone in the Bloyd Formation of Arkansas.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1915 | Cromyocrinus grandis Mather |
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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.
†Cromyocrinus grandis Mather 1915
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subc = subclass, c = class, p = phylum | |||||
| References: Aberhan 1992, Hendy et al. 2009, Kiessling 2004 | |||||
Age range: Morrowan or 323.40000 to 318.60000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Morrowan | USA (Oklahoma) | Cromyocrinus grandis (90795 128973 128976) | |
| Morrowan | USA (Texas) | Cromyocrinus grandis (90767) | |
| Morrowan | USA (Arkansas) | Cromyocrinus grandis (type locality: 90791) |