Upper Shuomo Fm, Nyalam section (Jurassic of China)

Also known as Assemblage II

Where: China (28.0° N, 86.0° E: paleocoordinates 40.3° S, 44.9° E)

• outcrop-level geographic resolution

When: Shuomo Formation, Tithonian (152.1 - 145.0 Ma)

• STRATIGRAPHIC RELATIONS: From Shuomo Fm, which underlies the Berriasian Guchuochun Fm. THICKNESS: From bed within 562 m thick exposure of Shuomo Fm. AGE: Tithonian. STRATIGRAPHIC POSITION: From middle part of Shuomo Fm, several hundred m below PBDB# 64867 and immediately above PBDB# 64877.

• bed-level stratigraphic resolution

Environment/lithology: deep-water; poorly lithified siltstone

• ENVIRONMENT: Offshore, deeper water, possibly continental slope.
• SPECIFIC LITHOLOGY: Siltstone. LITHIFICATION: Poorly lithified based on figured specimens.

Size class: macrofossils

Collection methods: COLLECTOR: Collected during 1980-1981; reported by Gou and Li, 1983. REPOSITORY: Beijing Graduate School, Wuhan College of Geology, China.

Primary reference: L. Xiaochi and J. A. Grant-Mackie. 1988. Upper Jurassic and Lower Cretaceous Buchia (Bivalvia) from southern Tibet, and some wider considerations. Alcheringa 12:249-268 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 64873: authorized by Austin Hendy, entered by Austin Hendy on 17.09.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Probably not exhaustive, including Buchia and biostratigraphically significant taxa. NOMENCLATURE: Appears to use modern nomenclature, with species-level designations.
Show authors, comments, and common names
Bivalvia
 Pectinida - Buchiidae
Buchia piochii, Buchia rugosa
Buchia piochii Gabb 1864 scallop
Buchia rugosa Fischer 1837 scallop