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Protocycloceras
Taxonomy
Protocycloceras was named by Hyatt (1900) [Sepkoski's age data: O Aren-l O Llde Sepkoski's reference number: 524,1066].
It was assigned to Spyroceratidae by Ulrich et al. (1944); and to Protocycloceratidae by Teichert et al. (1964), Hook and Flower (1977), Crick (1981), Kröger and Landing (2009) and Evans (2011).
It was assigned to Spyroceratidae by Ulrich et al. (1944); and to Protocycloceratidae by Teichert et al. (1964), Hook and Flower (1977), Crick (1981), Kröger and Landing (2009) and Evans (2011).
Species
P. abnorme, P. affine, P. arkansasense, P. catulus, P. debilis, P. doniphonense, P. furtivum, P. gangshanense, P. geronticum, P. lamarcki (syn. P. becki, P. whitfieldi, Rhabdocycloceras floweri), P. landmarcki, P. levisense, P. manitouense, P. mendax, P. odenvillense, P. ordinatum, P. philipsburgense, P. rushense, P. smithvillense, P. xerxes
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1900 | Protocycloceras Hyatt p. 518 |
| 1944 | Protocycloceras Ulrich et al. |
| 1964 | Protocycloceras Teichert et al. p. 152 |
| 1977 | Protocycloceras Hook and Flower |
| 1981 | Protocycloceras Crick p. 227 |
| 1994 | Rhabdocycloceras Zhuravleva p. 128 |
| 2009 | Protocycloceras Kröger and Landing |
| 2011 | Protocycloceras Evans |
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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. †Protocycloceras Hyatt 1900
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†Protocycloceras abnorme Ulrich et al. 1944
†Protocycloceras affine Ulrich et al 1944
†Protocycloceras arkansasense Ulrich et al. 1944
†Protocycloceras catulus Billings 1865
†Protocycloceras debilis Clark 1935
†Protocycloceras doniphonense Ulrich et al. 1944
†Protocycloceras furtivum Billings 1865
†Protocycloceras gangshanense Zou 1988
†Protocycloceras geronticum Ulrich et al. 1944
†Protocycloceras lamarcki Billings 1859
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Invalid names: Protocycloceras becki Billings 1859 [synonym], Protocycloceras whitfieldi Ruedemann 1906 [synonym], Rhabdocycloceras floweri Zhuravleva 1994 [synonym]
†Protocycloceras landmarcki Billings 1859
†Protocycloceras levisense Ulrich et al. 1944
†Protocycloceras manitouense Ulrich et al. 1944
†Protocycloceras mendax Billings 1859
†Protocycloceras odenvillense Ulrich et al. 1944
†Protocycloceras ordinatum Billings 1865
†Protocycloceras philipsburgense Ulrich et al. 1944
†Protocycloceras rushense McChesney 1859
†Protocycloceras smithvillense Ulrich et al. 1944
†Protocycloceras xerxes Billings 1865
Invalid names: Rhabdocycloceras Zhuravleva 1994 [synonym]
Diagnosis
No diagnoses are available