Locality B51, 22 km northeast of Amdo, Qiangtang Terrane (Jurassic to of China)

Where: Xizang, China (32.5° N, 91.8° E: paleocoordinates 15.5° N, 87.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Yanshiping Group, Aalenian to Aalenian (174.1 - 163.5 Ma)

• here listed as Yanshiping FORMATION, but elswhere listed as Yanshiping GROUP; Middle Jurassic

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified, black shale and lithified sandstone

• restricted marine sequence
• Sequence with black, fossiliferous shales, cross-bedded sands and a coalified plant bed

Size class: macrofossils

Collection methods: Paleontological collections made on the 1985 Geotraverse.

Primary reference: A. B. Smith and J. Xu. 1988. Palaeontology of the 1985 Geotraverse, Lhasa to Golmud. Philosophical Transactions of the Royal Society of London A 327:53-105 [M. Aberhan/S. Nurnberg/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 61519: authorized by Martin Aberhan, entered by Sabine Nürnberg on 16.06.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Thraciida - Thraciidae
Thracia sp.
Thracia sp. Blainville 1824 clam
 Pholadida - Corbulidae
Corbulomima cf. attenuata
Corbulomima cf. attenuata clam
listed as Corbulimima sp. cf. attenuata
 Pholadida - Ceratomyidae
Ceratomya cf. concentrica
Ceratomya cf. concentrica Sowerby 1822 clam
 Pholadida - Pleuromyidae
Pleuromya sp.
Pleuromya sp. Meek 1873 clam
 Cardiida - Cardiidae
Protocardia cf. stricklandi
Protocardia cf. stricklandi Morris and Lycett 1853 cockle
 Cardiida - Tancrediidae
? Tancredia sp.
? Tancredia sp. Lycett 1850 clam