Qingtoushan Formation
| Xidagou Formation | |
|---|---|
| Stratigraphic range: Middle Permian | |
| Type | Geological formation |
| Location | |
| Region | Gansu |
| Country |  China |
| Extent | Qilian Mountains |
The Xidagou Formation is a Middle Permian-age geologic formation in the Qilian Mountains of Gansu, China.
Paleobiota
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Synapsida
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|---|---|---|---|---|---|---|
|
B. qilianicus[1] |
A well-preserved skull[1] | An Anomodont[1] |
| |||
|
S. yumenensis[2] |
A single skull (GMV 1601) | An Anteosaurid Dinocephalian |
| |||
|
S. acidentatus[2] |
A skull (IGCAGS V 361) and fragmentary jaw bones |
Jr. synonym of Sinophoneus yumenensis |
| |||
|
R. dashankouensis |
Dashankou locality | A partial skull | A basal Therapsid. |
|
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Sauropsida
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|---|---|---|---|---|---|---|
|
B. zhengi |
A Bolosaurid |
| ||||
|
G. qingtoushanensis |
A Captorhinid |
References
- ^ a b c d Liu, J.; Rubidge, B.; Li, J. (2009). "A new specimen of Biseridens qilianicus indicates its phylogenetic position as the most basal anomodont". Proceedings of the Royal Society B. 277 (1679): 285–292. doi:10.1098/rspb.2009.0883. PMC 2842672. PMID 19640887.
- ^ a b c d Kammerer, C.F. (2011). "Systematics of the Anteosauria (Therapsida: Dinocephalia)". Journal of Systematic Palaeontology. 9 (2). doi:10.1080/14772019.2010.492645.
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