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Stacheoceras yajiangense
Taxonomy
Stacheoceras yajiangense was named by Sheng (1984). Its type specimen is P3038 and is a 3D body fossil. Its type locality is Xiukang Limestone Block, Sample I89-2177, Lhaze County, which is in a Capitanian carbonate limestone in the Quxia Formation of China.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1984 | Stacheoceras yajiangense Sheng p. 64 figs. Pl 1, figs 1, 2; text-fig 9 |
| 1990 | Stacheoceras yajiangense Bogoslovskaya p. 73 |
| 2002 | Stacheoceras yajiangense Leonova |
| 2018 | Stacheoceras yajiangense Leonova p. 242 |
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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.
†Stacheoceras yajiangense Sheng 1984
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 37.1 | 34.7 | 39.6 | 37.2 | 3.46 | |
| shell diameter | 2 | 65.2 | 65.0 | 65.4 | 65.2 | 0.283 | |
| shell inflation | 2 | 7.50 | - | - | 7.50 | - |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Capitanian or 264.28000 to 259.51000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Capitanian | China (Xizang) | Stacheoceras yajiangense (type locality: 117566 117567) |