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Xenodiscus xizangensis
Taxonomy
Xenaspis xizangensis was named by Sheng (1988). Its type specimen is P3170 and is a 3D body fossil. Its type locality is Xizang-Xinjiang Highway marker 41 exotic block, sample XL-7, which is in a Wuchiapingian carbonate limestone in the Quxia Formation of China.
It was recombined as Xenodiscus xizangensis by Leonova (2002).
It was recombined as Xenodiscus xizangensis by Leonova (2002).
Sister species lacking formal opinion data
Synonymy list
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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.
†Xenodiscus xizangensis Sheng 1988
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 21.3 | 21.3 | 21.3 | 21.3 | - | |
| shell diameter | 2 | 67.5 | 64.2 | 71.0 | 67.6 | 4.81 | |
| shell inflation | 2 | 34.0 | - | - | 34.0 | - |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Wuchiapingian or 259.51000 to 254.14000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wuchiapingian | China (Xizang) | Xenaspis xizangensis (type locality: 117568) |