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Rotodiscoceras longilobatum
Taxonomy
Rotodiscoceras longilobatum was named by Zhao et al. (1978). Its type specimen is NIGP 14969 and is a 3D body fossil. Its type locality is Lijiachong, Lindai, Bed 2, Qingzhen County, which is in a Changhsingian marine limestone in the Changxing Formation of China.
Synonymy list
| Year | Name and author |
|---|---|
| 1978 | Rotodiscoceras longilobatum Zhao et al. p. 153 figs. Pl 29, figs 4,5; text-fig 100b |
| 2002 | Rotodiscoceras longilobatum 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 longilobatum Zhao et al. 1978
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 30.5 | |||||
| shell diameter | 1 | 82.4 | |||||
| shell inflation | 1 | 31.7 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Changhsingian or 254.17000 to 252.17000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian | China (Guizhou) | Rotodiscoceras longilobatum (type locality: 98030) |