Naobaogou Formation

TypeGeological formation

Sub-unitsMembers I-III

UnderliesLaowopu Formation

OverliesShiyewan 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
Coordinates	40°42′N 110°24′E / 40.7°N 110.4°E / 40.7; 110.4
Region	Inner Mongolia
Country	China
Extent	Daqing Mountains
Naobaogou Formation (China) Show map of China Naobaogou Formation (Inner Mongolia) Show map of Inner Mongolia Location of 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]