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Pentagonoceras
Taxonomy
Pentagonoceras was named by Zhao et al. (1978) [Sepkoski's age data: P Dora Sepkoski's reference number: 302]. Its type is Pentagonoceras costatum.
It was assigned to Pseudotirolitidae by Leonova (2002); to Ceratitida by Sepkoski (2002); and to Pleuronodoceratidae by Korn (2006).
It was assigned to Pseudotirolitidae by Leonova (2002); to Ceratitida by Sepkoski (2002); and to Pleuronodoceratidae by Korn (2006).
Species
P. attenuatum, P. chaotianense, P. costatum (type species), P. guangyuanense, P. guizhouense, P. spinosum
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1978 | Pentagonoceras Zhao et al. p. 156 |
| 2002 | Pentagonoceras Leonova |
| 2002 | Pentagonoceras Sepkoski |
| 2006 | Pentagonoceras Korn |
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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. †Pentagonoceras Zhao et al. 1978
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†Pentagonoceras attenuatum Zhao et al. 1978
†Pentagonoceras chaotianense Zhao et al. 1978
†Pentagonoceras costatum Zhao et al. 1978
†Pentagonoceras guangyuanense Zhao et al. 1978
†Pentagonoceras guizhouense Zhao et al. 1978
†Pentagonoceras spinosum Zhao et al. 1978
Diagnosis
No diagnoses are available