Locality B30, north of Xiaqiong Lake, Lhasa Terrane (Cretaceous to of China)

Where: Xizang, China (31.8° N, 89.5° E: paleocoordinates 15.2° N, 86.9° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Xiaqiongco Formation, Valanginian to Valanginian (139.8 - 129.4 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified siltstone

• Very shallow back reef marine lagoonal facies, with strand-line deposits.

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Size classes: macrofossils, microfossils

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 61419: authorized by Martin Aberhan, entered by Sabine Nürnberg on 10.06.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Foraminifera
 Loftusiacea - Cyclamminidae
Pseudocyclammina sp.
Echinoidea
 Spatangoida - Toxasteridae
? Toxaster sp.
? Toxaster sp. Agassiz 1839 heart urchin
almost certainly Toxaster sp.
 Cidaroida - Rhabdocidaridae
Rhabdocidaris sp.
Rhabdocidaris sp. Desor 1855 pencil urchin
Gastropoda
 Cerithioidea - Cryptaulacidae
Cryptaulax sp.
Polychaeta
 Sabellida - Serpulidae
Serpula sp.
Serpula sp. Linnaeus 1758