Where: Nei Mongol, China (42.7° N, 110.5° E: paleocoordinates 31.0° N, 90.5° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Zhesi Formation, Wordian (266.9 - 264.3 Ma)

• It is about 6 feet wide, and not more than 20 feet long, enclosed by green fissile shales and thin beds of sandstone.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Collection methods: peel or thin section,

Primary reference: A. W. Grabau. 1931. The Permian of Mongolia. Natural History of Asia 4:1-665 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 109179: authorized by Matthew Clapham, entered by Matthew Clapham on 13.05.2011

Creative Commons license: CC BY (attribution)