Duoma District, Rutog County, Qudi Formation (Permian of China)

Where: Xizang, China (33.7° N, 80.3° E: paleocoordinates 43.0° S, 72.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Qudi Formation, Sakmarian (293.5 - 290.1 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: B. P. Liu and X. S. Cui. 1983. Discovery of Eurydesma fauna from Rutog, northwest Xizang (Tibet), and its biogeographic significance. Earth Science - Journal of Wuhan College of Geology 19(1):79-92 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 97290: authorized by Matthew Clapham, entered by Matthew Clapham on 21.07.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Nuculanida - Polidevciidae
Phestia thompsoni
Phestia thompsoni Reed 1932 clam
 Trigoniida - Schizodidae
Schizodus fitzroyensis, Schizodus tibeticus n. sp.
Schizodus fitzroyensis Dickins 1963 clam
Schizodus tibeticus n. sp. Liu and Cui 1983 clam
 Pholadomyida - Megadesmidae
Megadesmus "sp. 2"
Megadesmus "sp. 2" Sowerby 1838 clam
 Cardiida - Kalenteridae
Permophorus gregarius, Stutchburia brasiliensis
Permophorus gregarius Etheridge 1900 clam
Stutchburia brasiliensis Reed 1930 clam
 Actinodontida - Oriocrassatellidae
? Oriocrassatella sp., Oriocrassatella rutogensis n. sp., Oriocrassatella intermedia
? Oriocrassatella sp. Etheridge 1907 clam
Oriocrassatella rutogensis n. sp. Liu and Cui 1983 clam