Also known as Otog Qi, Chabu Sumu, Chaibu Sumi, SCDP

Where: Nei Mongol, China (38.9° N, 107.3° E: paleocoordinates 40.0° N, 109.6° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Jingchuan Formation (Zhidan Group), Late/Upper Barremian (130.0 - 125.5 Ma)

• "earliest Cretaceous or possible even Late Jurassic in age" when originally assigned to Yijunhuoluo Fm.; now "middle-late Early Cretaceous"

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; gray, green, silty sandstone and lithified, lenticular, gray, green mudstone

Size class: macrofossils

Preservation: adpression, soft parts

Collected by SCDP in 1990; reposited in the IVPP

Collection methods: surface (in situ),

• collected by field crew of the Sino-Canadian Dinosaur Expedition

Primary reference: Z.-M. Dong. 1994. A Lower Cretaceous enantiornithine bird from the Ordos Basin, Inner Mongolia, People's Republic of China. Canadian Journal of Earth Sciences 30(10-11):2177-2179 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 85296: authorized by John Alroy, entered by John Alroy on 11.12.2008, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)