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Rotodiscoceras dushanense
Taxonomy
Rotodiscoceras dushanense was named by Zhao et al. (1978). Its type specimen is NIGP 34350 and is a 3D body fossil. Its type locality is Tuzishan, Dushanzhen, Guangde County, which is in a Changhsingian carbonate limestone in the Changxing Formation of China.
Synonymy list
| Year | Name and author |
|---|---|
| 1978 | Rotodiscoceras dushanense Zhao et al. p. 156 figs. Pl 24, fig 2; pl 28, figs 10-13 |
| 1990 | Rotodiscoceras dushanense Wang p. 769 figs. Pl 3, figs 3,4 |
| 2002 | Rotodiscoceras dushanense Leonova |
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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.
†Rotodiscoceras dushanense Zhao et al. 1978
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 22.0 | - | - | 22.0 | - | |
| shell diameter | 3 | 59.1 | 49.1 | 66.2 | 63.6 | 9.21 | |
| shell inflation | 3 | 19.0 | - | - | 19.0 | - |
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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 (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian | China (Anhui) | Rotodiscoceras dushanense (109619 121615 type locality: 121665) | |
| Changhsingian | China (Guangxi) | Rotodiscoceras dushanense (121631 210121 210123) | |
| Changhsingian | China (Fujian) | Rotodiscoceras dushanense (95491) | |
| Changhsingian | China (Sichuan) | Rotodiscoceras dushanense (149084) |