The Ermaying Formation is a sedimentary succession of Anisian (Middle Triassic) age. It is found in the Shaanxi Province of China. It is composed of an up to 600 m thick sequence of mudstone and sandstone. It is famous for its fossils of tetrapods.
Notable fossils include the genera Fenhosuchus, Eumetabolodon, Halazhaisuchus, Guchengosuchus, Neoprocolophon, Ordosiodon, Wangisuchus and Shansisuchus.
- ^ Desojo, J. B. (2013). Anatomy, Phylogeny and Palaeobiology of Early Archosaurs and their Kin. ISBN 978-1862393615.
- ^ a b Sues, Hans-Dieter; Fraser, Nicholas C. (2010). Triassic life on land : the great transition. New York: Columbia University Press. ISBN 978-0231135221.