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Amphipsalidocrinus
Taxonomy
Amphipsalidocrinus was named by Weller (1930) [Sepkoski's age data: ]. It is not extant. Its type is Amphipsalidocrinus scissurus. It is the type genus of Amphipsalidocrininae.
It was assigned to Amphipsalidocrininae by Arendt (1970); to Codiacrininae by Ubaghs et al. (1978); and to Cladida by Sepkoski (2002).
It was assigned to Amphipsalidocrininae by Arendt (1970); to Codiacrininae by Ubaghs et al. (1978); and to Cladida by Sepkoski (2002).
Species
A. alamogordoensis, A. arcarius, A. comptus, A. inconsuetus, A. posterior, A. scissurus (type species)
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Amphipsalidocrinus Weller |
| 1930 | Tytthocrinus Weller |
| 1936 | Octocrinus Peck |
| 1970 | Amphipsalidocrinus Arendt p. 193 |
| 1978 | Amphipsalidocrinus Ubaghs et al. p. T596 |
| 1978 | Tytthocrinus Ubaghs et al. p. T604 |
| 2002 | Amphipsalidocrinus 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. †Amphipsalidocrinus Weller 1930
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†Amphipsalidocrinus alamogordoensis Strimple and Koenig 1956
†Amphipsalidocrinus arcarius Koenig and Meyer 1965
†Amphipsalidocrinus comptus Weller 1930
†Amphipsalidocrinus inconsuetus Peck 1936
†Amphipsalidocrinus posterior Arendt 1970
†Amphipsalidocrinus scissurus Weller 1930
Invalid names: Octocrinus Peck 1936 [synonym], Tytthocrinus Weller 1930 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subc = subclass, c = class, p = phylum | |||||
| References: Kiessling 2004, Hendy et al. 2009, Aberhan 1992 | |||||
Age range: base of the Wenlock to the top of the Artinskian or 432.90000 to 283.30000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wenlock | USA (Indiana) | A. sp. (26778 26858) | |
| Ludlow | USA (Missouri) | A. n. sp. (26822) A. sp. (26821) | |
| Ludfordian - Pridoli | USA (Oklahoma) | A. sp. (26824) | |
| Givetian | USA (New York) | Tytthocrinus arcarius (76137) | |
| Kinderhookian | USA (Indiana) | A. inconsuetus (6733 6734) | |
| Ivorian | USA (Missouri) | Octocrinus inconsuetus (90835) | |
| Desmoinesian | USA (Indiana) | A. scissurus (90779) | |
| Artinskian | Russian Federation | A. posterior (101527) |