Naobaogou Formation

Naobaogou Formation
Stratigraphic range: Lopingian? PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Sub-units	Members I-III
Underlies	Laowopu Formation
Overlies	Shiyewan Formation
Thickness	More than 1000 m
Lithology
Primary	Siltstone
Other	Conglomerate
Location
Country	China
Extent	Daqing Mountains

The Naobaogou Formation is a geological formation in the Daqing Mountains of China. It is likely of Lopingian (Late Permian) age. It consists of three rhythms of sediment, labelled members I-III primarily of purple siltstone, but each with a thick basal conglomerate bed. It is notable for its fossil content, producing one of the most diverse Late Permian vertebrate faunas outside Russia and South Africa. ^[1]

Vertebrate fauna

Fauna of the Naobaogou Formation

Genus	Species	Material	Notes	Images
Caodeyao [2]	C. liuyufengi	Partial skull, mandible, humerus	A eutherocephalian, closely related to Purlovia.
Daqingshanodon [3]	D. limbus	Skull	Dicynodont
Dicynodontia	Indeterminate	Partial skulls	5 additional morphotypes in addition to Daqingshanodon and Turfanodon, 2 of which are closely related to the former taxon and 3 or 4 related to Jimusaria. [4] [5]
Elginia [1]	E. wuyongae	Partial skull	Pareiasaur
Euchambersia	E. liuyudongi	Skull and lower jaw	Akidnognathid therocephalian
Gansurhinus [6] [7]	G. naobaogouensis	Relatively complete skeleton of an immature individual	Captorhinid
Jimusaria [8]	J. monanensis	Skulls, cervicals, scapula	Dicynodontoid dicynodont
Jiufengia [9]	J. jiai	Partial skull and postcranial skeleton	Akidnognathid therocephalian
Laosuchus [10]	L. hun	Partial skull and postcranial skeleton	Chroniosuchian
Shiguaignathus [11]	S. wangi	Partial skull	Akidnognathid therocephalian
Turfanodon [5]	T. jiufengensis	Relatively complete skeleton and skulls	Dicynodontoid dicynodont

References

1. Liu, J.; Bever, G.S. (2018). Angielczyk, K. (ed.). "The tetrapod fauna of the upper Permian Naobaogou Formation of China: a new species of Elginia (Parareptilia, Pareiasauria)". Papers in Palaeontology. 4 (2): 197–209. doi:10.1002/spp2.1105. S2CID   135273110.
2. Liu, Jun; Abdala, Fernando (2020-05-28). "The tetrapod fauna of the upper Permian Naobaogou Formation of China: 5. Caodeyao liuyufengi gen. et sp. nov., a new peculiar therocephalian". PeerJ. 8: e9160. doi: 10.7717/peerj.9160 . ISSN   2167-8359. PMC   7261480 . PMID   32523808.
3. Zhuh Y (1989). "The discovery of dicynodonts in Daqingshan Mountain, Nei Mongol (Inner Mongolia)" (PDF). Vertebrata PalAsiatica. 27 (1): 9–27.
4. Liu, J. (2019). "The tetrapod fauna of the upper Permian Naobaogou Formation of China— 4. the diversity of dicynodonts". Vertebrata PalAsiatica: 173–180. doi:10.19615/j.cnki.1000-3118.190522.
5. Liu, J. (2021). "The tetrapod fauna of the upper Permian Naobaogou Formation of China: 6. Turfanodon jiufengensis sp. nov. (Dicynodontia)". PeerJ. 9 (e10854): e10854. doi: 10.7717/peerj.10854 . PMC   7896508 . PMID   33643709.
6. Reisz RR, Liu J, Li JL, Müller J (May 2011). "A new captorhinid reptile, Gansurhinus qingtoushanensis, gen. et sp. nov., from the Permian of China". Die Naturwissenschaften. 98 (5): 435–41. Bibcode:2011NW.....98..435R. doi:10.1007/s00114-011-0793-0. PMID   21484260. S2CID   20274349.
7. Liu, Jun (2023-05-09). "The tetrapod fauna of the upper Permian Naobaogou Formation of China: 9. A new species of Gansurhinus (Reptilia: Captorhinidae) and a revision of Chinese captorhinids" . Journal of Vertebrate Paleontology. 42 (5): e2203200. doi:10.1080/02724634.2023.2203200. ISSN   0272-4634. S2CID   243245020.
8. Shi, Y.-T.; Liu, J. (2023). "The tetrapod fauna of the upper Permian Naobaogou Formation of China: 10. Jimusaria monanensis sp. nov. (Dicynodontia) shows a unique epipterygoid". PeerJ. 11: e15783. doi: 10.7717/peerj.15783 . ISSN   2167-8359. PMC   10399559 . PMID   37547715.
9. Liu J, Abdala F (2019-02-22). "Jiufengia jiai gen. et sp. nov., a large akidnognathid therocephalian". PeerJ. 7: e6463. doi: 10.7717/peerj.6463 . PMC   6388668 . PMID   30809450.
10. Liu, J.; Chen, J. (2021). "The tetrapod fauna of the upper Permian Naobaogou Formation of China: 7. Laosuchus hun sp. nov. (Chroniosuchia) and interrelationships of chroniosuchians". Journal of Systematic Palaeontology. 18 (24): 2043–2058. doi:10.1080/14772019.2021.1873435. S2CID   232116225.
11. Liu J, Abdala F (2017-12-06). "Shiguaignathus wangi gen. et sp. nov., the first akidnognathid therocephalian from China". PeerJ. 5: e4150. doi: 10.7717/peerj.4150 . PMC   5723136 . PMID   29230374.