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Kirkoceras
Taxonomy
Kirkoceras was named by Ulrich and Foerste (1936). Its type is Kirkoceras arcuatum.
It was synonymized subjectively with Clitendoceras by Hook and Flower (1977).
It was assigned to Piloceratidae by Ulrich et al. (1943); to Proterocameroceratidae by Teichert et al. (1964); and to Proterocameratidae by Crick (1981).
It was synonymized subjectively with Clitendoceras by Hook and Flower (1977).
It was assigned to Piloceratidae by Ulrich et al. (1943); to Proterocameroceratidae by Teichert et al. (1964); and to Proterocameratidae by Crick (1981).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Kirkoceras Ulrich and Foerste |
| 1943 | Kirkoceras Ulrich et al. |
| 1964 | Kirkoceras Teichert et al. p. 170 |
| 1981 | Kirkoceras Crick p. 226 |
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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. †Kirkoceras Ulrich and Foerste 1936
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†Kirkoceras arcuatum Ulrich and Foerste 1936
†Kirkoceras bradleyi Ulrich et al. 1943
†Kirkoceras compressum Ulrich et al. 1943
†Kirkoceras gracile Ulrich et al. 1943
†Kirkoceras missisquoi Billings 1865
†Kirkoceras obliquum Ulrich et al. 1943
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tremadocian | Canada (Quebec) | K. bradleyi, K. missisquoi (189280) | |
| Stairsian | USA (New York) | Orthoceras missisquoi (42799) | |
| Floian | Canada (Quebec) | K. missisquoi (98439) | |
| Arenig | China (JiLin) | K. sp. (21146) | |
| Blackhillsian | USA (Colorado) | K. obliquum (102532) | |
| Dapingian | USA (Colorado) | K. arcuatum, K. compressum, K. gracile (189279) |