Sunjiagou Formation

Sunjiagou Formation
Sunjiagou Formation
Stratigraphic range: Late Wuchiapingian-earliest Induan PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Unit of	Shiqianfeng Group
Underlies	Liujiagou Formation
Overlies	Shangshihezi Formation
Thickness	100-200 metres
Lithology
Primary	Sandstone, Siltstone, Mudstone
Location
Country	China
Extent	Shanxi

The Sunjiagou Formation is a geological formation in Shanxi, China. It is of Lopingian age. The lower and middle parts of the formation consists of intensely bioturbated fine grained sandstones and thinly interbedded mudstones, deposited in a shallow-shore lake depositional environment, while the upper part consists of fine grained sandstone, siltstone and mudstone.^[1] Alongside the Naobaogou Formation, it has provided an important vertebrate fauna.

Paleobiota

Genus	Species	Material	Notes
Sanchuansaurus^[2]	S. pygmaeus		Pareiasaur
Shihtienfenia ^[2]	S. permica		Pareiasaur
Seroherpeton^[3]	S. yangquanensis	right upper jaw and palate	Embolomeri
Taoheodon^[4]	T. baizhijuni		Dicynodont
Cryptodontia^[5]	Indeterminate	Partial skull	Dicynodont

References

^ Chu, Daoliang; Tong, Jinnan; Song, Haijun; Benton, Michael J.; Bottjer, David J.; Song, Huyue; Tian, Li (2015-06-09). "Early Triassic wrinkle structures on land: stressed environments and oases for life". Scientific Reports. 5 (1): 10109. doi:10.1038/srep10109. ISSN 2045-2322. PMC 4460569. PMID 26054731.
^ ^a ^b Benton, Michael J. (August 2016). "The Chinese pareiasaurs". Zoological Journal of the Linnean Society. 177 (4): 813–853. doi:10.1111/zoj.12389. hdl:1983/6d1a4f9b-a768-4b86-acb1-b3ad1f7ee885.
^ Chen, Jianye; Liu, Jun (2020-12-01). "The youngest occurrence of embolomeres (Tetrapoda: Anthracosauria) from the Sunjiagou Formation (Lopingian, Permian) of North China". Fossil Record. 23 (2): 205–213. doi:10.5194/fr-23-205-2020. ISSN 2193-0066.
^ Liu, Jun (2020-01-02). "Taoheodon baizhijuni , gen. et sp. nov. (Anomodontia, Dicynodontoidea), from the upper Permian Sunjiagou Formation of China and its implications". Journal of Vertebrate Paleontology. 40 (1): e1762088. doi:10.1080/02724634.2020.1762088. ISSN 0272-4634. S2CID 221749476.
^ Yi J, Liu J, 2020. Pareiasaur and dicynodont fossils from upper Permian of Shouyang, Shanxi, China. Vertebrata PalAsiatica, 58(1): 16–23

[1] Chu, Daoliang; Tong, Jinnan; Song, Haijun; Benton, Michael J.; Bottjer, David J.; Song, Huyue; Tian, Li (2015-06-09). "Early Triassic wrinkle structures on land: stressed environments and oases for life". Scientific Reports. 5 (1): 10109. doi:10.1038/srep10109. ISSN 2045-2322. PMC 4460569. PMID 26054731.

[:0-2] Benton, Michael J. (August 2016). "The Chinese pareiasaurs". Zoological Journal of the Linnean Society. 177 (4): 813–853. doi:10.1111/zoj.12389. hdl:1983/6d1a4f9b-a768-4b86-acb1-b3ad1f7ee885.

[3] Chen, Jianye; Liu, Jun (2020-12-01). "The youngest occurrence of embolomeres (Tetrapoda: Anthracosauria) from the Sunjiagou Formation (Lopingian, Permian) of North China". Fossil Record. 23 (2): 205–213. doi:10.5194/fr-23-205-2020. ISSN 2193-0066.

[4] Liu, Jun (2020-01-02). "Taoheodon baizhijuni , gen. et sp. nov. (Anomodontia, Dicynodontoidea), from the upper Permian Sunjiagou Formation of China and its implications". Journal of Vertebrate Paleontology. 40 (1): e1762088. doi:10.1080/02724634.2020.1762088. ISSN 0272-4634. S2CID 221749476.

[5] Yi J, Liu J, 2020. Pareiasaur and dicynodont fossils from upper Permian of Shouyang, Shanxi, China. Vertebrata PalAsiatica, 58(1): 16–23

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