Journal article
The first record of a pterosaur from the Early Cretaceous strata of Öösh (Övörkhangai; Mongolia)
Citation
Andres, B.; Norell, M. A. (2005). The first record of a pterosaur from the Early Cretaceous strata of Öösh (Övörkhangai; Mongolia). American Museum Novitates 3472: 1-6.
Cited by genera
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Psittacosaurus
Places the Psittacosaurus mongoliensis holotype in the cannonball beds at the base of the Öösh Formation, and gives Övörkhangai for the locality.