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Pachydiscoceras
Taxonomy
Pachydiscoceras was named by Zhao and Liang (1966).
It was synonymized subjectively with Pseudotirolites by Leonova (2002).
It was assigned to Pseudotirolitidae by Korn (2006).
It was synonymized subjectively with Pseudotirolites by Leonova (2002).
It was assigned to Pseudotirolitidae by Korn (2006).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1966 | Pachydiscoceras Zhao and Liang |
| 2006 | Pachydiscoceras 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. †Pachydiscoceras Zhao and Liang 1966
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†Pachydiscoceras changhsingense Chao and Liang 1966
†Pachydiscoceras ellipticum Zhao et al. 1978
†Pachydiscoceras flexoplicatum Zhao et al. 1978
†Pachydiscoceras obesum Zhao et al. 1978
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 7 | 20.1 | 15.5 | 33.2 | 18.7 | 6.96 | |
| shell diameter | 7 | 52.6 | 29.4 | 96.7 | 49.1 | 22.7 | |
| shell inflation | 7 | 21.4 | 14.1 | 36.7 | 19.1 | 8.63 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Changhsingian or 254.14000 to 251.90200 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian | China (Guangxi) | P. flexoplicatum (210125) | |
| Changhsingian | China (Sichuan) | P. flexoplicatum (148463) P. sp. (98048) | |
| Changhsingian | China (Jiangsu) | P. sp. (109618) | |
| Changhsingian | China (Guizhou) | P. changhsingense, P. obesum, P. flexoplicatum, P. ellipticum (98030) P. ellipticum (149297) P. sp. (112012 112016 149295 151134) | |
| Changhsingian | China (Zhejiang) | P. changhsingense (121649) |