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Sigmocycloceras
Taxonomy
Sigmocycloceras was named by Kobayashi (1934) [Sepkoski's age data: O Llvi Sepkoski's reference number: 298].
It was assigned to Troedssonellidae by Crick (1981); to Orthocerida by Sepkoski (2002); and to Sactorthoceratidae by Teichert et al. (1964), Kröger et al. (2007).
It was assigned to Troedssonellidae by Crick (1981); to Orthocerida by Sepkoski (2002); and to Sactorthoceratidae by Teichert et al. (1964), Kröger et al. (2007).
Synonymy list
| Year | Name and author |
|---|---|
| 1934 | Sigmocycloceras Kobayashi |
| 1964 | Sigmocycloceras Teichert et al. p. 233 |
| 1981 | Sigmocycloceras Crick p. 228 |
| 2002 | Sigmocycloceras Sepkoski |
| 2007 | Sigmocycloceras Kröger et al. p. 1274 |
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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. †Sigmocycloceras Kobayashi 1934
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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 | |||||
Collections
No collection or age range data are available