Also known as Uuden Sayr, Uuden Sajr, Udan Sayr

Where: Omnogov, Mongolia (42.1° N, 102.2° E: paleocoordinates 39.1° N, 91.7° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Djadokhta Formation, Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; red, yellow sandstone

Size class: macrofossils

Collected by MAE in 1995-1997; reposited in the AMNH

Collection methods: quarrying, surface (in situ),

Primary reference: K. Gao and M. A. Norell. 2000. Taxonomic composition and systematics of Late Cretaceous lizard assemblages from Ukhaa Tolgod and adjacent localities, Mongolian Gobi Desert. Bulletin of the American Museum of Natural History 249:1-118 [J. Alroy/E. Leckey/R. Benson] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 68516: authorized by Matt Carrano, entered by Matt Carrano on 25.01.2007