The
Nemegt Formation (or
Nemegtskaya Svita) is a geological
formation in the Gobi desert of Mongolia, dating from the Late
Cretaceous. It overlies and sometimes interfingers with the
Barun Goyot Formation. Interfingering has been noted at the stratotype (Red Walls) and Khermeen Tsav. It consists of river channel sediments and contains
fossils of
fish,
turtles,
crocodilians,
birds and a diverse
fauna of
dinosaurs. The
climate associated with it was wetter than when preceding formations were deposited; there seems to have existed at least some degree of forest cover. Fossilized trunks have been also found.