Ermaying Formation

The Ermaying Formation is a sedimentary succession of Anisian (Middle Triassic) age. It is found in the Shaanxi Province of China.[1] It is composed of an up to 600 m thick sequence of mudstone and sandstone.[2] It is famous for its fossils of tetrapods.[2]

Ermaying Formation Stratigraphic range: Anisian ~247–242 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Sub-units	Two Members
Underlies	Tongchuan & Xingshikou Formations
Overlies	Liujiagou Formation
Thickness	Up to 600 metres (2,000 ft)
Lithology
Primary	Mudstone, sandstone
Other	Tuff
Location
Coordinates	37°26′15″N 110°39′06″E
Approximate paleocoordinates	38.2°N 90.5°E
Region	Shaanxi, Shanxi, Inner Mongolia
Country	China
Ermaying Formation (China) Ermaying Formation (Shanxi)

Fossil content

Notable fossils include the genera Fenhosuchus, Eumetabolodon, Halazhaisuchus, Guchengosuchus, Neoprocolophon, Ordosiodon, Wangisuchus and Shansisuchus.

References

1. Desojo, J. B. (2013). Anatomy, Phylogeny and Palaeobiology of Early Archosaurs and their Kin. ISBN 978-1862393615.
2. Sues, Hans-Dieter; Fraser, Nicholas C. (2010). Triassic life on land : the great transition. New York: Columbia University Press. ISBN 978-0231135221.