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Arrectocrinus
Taxonomy
Arrectocrinus was named by Knapp (1969) [Sepkoski's age data: C Step-l C Step-u]. It is not extant.
It was assigned to Cladida by Sepkoski (2002); and to Catacrinidae by Webster (2006).
It was assigned to Cladida by Sepkoski (2002); and to Catacrinidae by Webster (2006).
Species
Entered
by J. Sepkoski on 2003-01-23; modified by D. van Oyen on 2013-04-30
Synonymy list
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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. †Arrectocrinus Knapp 1969
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†Arrectocrinus iowensis Pabian and Strimple 1980
†Arrectocrinus major Weller 1909
†Arrectocrinus texanus Weller 1909
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subc = subclass, c = class, p = phylum | |||||
| References: Kiessling 2004, Aberhan 1992, Hendy et al. 2009 | |||||
Age range: base of the Rusavkinian to the top of the Kungurian or 303.70000 to 274.40000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rusavkinian | USA (Iowa) | A. iowensis (124436) | |
| Kungurian | USA (Texas) | Delocrinus major, Delocrinus texanus (89392) |