Where: Nei Mongol, China (43.8° N, 111.8° E: paleocoordinates 45.7° N, 101.9° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Iren Dabasu Formation, Turonian to Turonian (93.5 - 83.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Olsen in 1923; reposited in the AMNH

Primary reference: C. W. Gilmore. 1933. On the dinosaurian fauna of the Iren Dabasu Formation. Bulletin of the American Museum of Natural History 68(2-3):23-78 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 48943: authorized by Matt Carrano, entered by Matt Carrano on 04.04.2005