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Cyrtonybyoceras
Taxonomy
Cyrtonybyoceras was named by Teichert (1933) [Sepkoski's age data: O Llvi-l O Llde Sepkoski's reference number: 298].
It was assigned to Armenoceratidae by Teichert et al. (1964); to Wutinoceratidae by Crick (1981); and to Actinocerida by Sepkoski (2002).
It was assigned to Armenoceratidae by Teichert et al. (1964); to Wutinoceratidae by Crick (1981); and to Actinocerida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1933 | Cyrtonybyoceras Teichert |
| 1964 | Cyrtonybyoceras Teichert et al. p. 208 |
| 1981 | Cyrtonybyoceras Crick p. 227 |
| 2002 | Cyrtonybyoceras 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. †Cyrtonybyoceras Teichert 1933
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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 | |||||
Age range: base of the Darriwilian to the top of the Early/Lower Llanvirn or 467.30000 to 461.10000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Arenig | China (ShanDong) | C. sp. (20773) | |
| Whiterockian | Canada (Newfoundland and Labrador) | C. clouei (104863) C. sp. (104871) | |
| Early/Lower Llanvirn | China (HeBei) | C. sp. (7990) | |
| Darriwilian | China (HeBei) | C. sp. (7955) | |
| Late/Upper Llanvirn | China (HeBei) | C. sp. (7988) |