Naobaogou Formation

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, labeled 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]

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

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	A dicynodont
Dicynodontia	Indeterminate	Partial skulls	Five additional morphotypes in addition to Daqingshanodon and Turfanodon, two of which are closely related to the former taxon and three or four related to Jimusaria.[4][5]
Elginia[1]	E. wuyongae	Partial skull	A pareiasaur
Euchambersia	E. liuyudongi	Skull and lower jaw	An akidnognathid therocephalian
Gansurhinus[6][7]	G. naobaogouensis	Relatively complete skeleton of an immature individual	A captorhinid
Jimusaria[8]	J. monanensis	Skulls, cervicals, scapula	A dicynodontoid dicynodont
Jiufengia[9]	J. jiai	Partial skull and postcranial skeleton	An akidnognathid therocephalian
Laosuchus[10]	L. hun	Partial skull and postcranial skeleton	A chroniosuchian
Shiguaignathus[11]	S. wangi	Partial skull	An akidnognathid therocephalian
Turfanodon[5]	T. jiufengensis	Relatively complete skeleton and skulls	A dicynodontoid dicynodont
Yinshanosaurus[12]	Y. angustus	Partial articulated skeleton and skull, additional isolated skull	A pareiasaur