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Arkoceras
Taxonomy
Arkoceras was named by Ulrich et al. (1942) [Sepkoski's age data: O Aren-u O Llvi Sepkoski's reference number: 298]. Its type is Arkoceras exiguum.
It was assigned to Trocholitidae by Ulrich et al. (1942), Teichert et al. (1964), Crick (1981); and to Tarphyceratida by Sepkoski (2002).
It was assigned to Trocholitidae by Ulrich et al. (1942), Teichert et al. (1964), Crick (1981); and to Tarphyceratida by Sepkoski (2002).
Species
A. exiguum (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1942 | Arkoceras Ulrich et al. |
| 1964 | Arkoceras Teichert et al. p. 360 |
| 1981 | Arkoceras Crick p. 228 |
| 2002 | Arkoceras 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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||