Rock formation · Övörkhangai Province
Öösh Formation
Early Cretaceous terrestrial beds of the Oshih (Öösh) Basin near Artsa Bogdo, Mongolia; type unit of Psittacosaurus mongoliensis.
A formation is a body of rock laid down in one setting over a stretch of time. 1 dinosaur in DinoDex is known from fossils found in it.
