ammonites
Upper Shuomo Fm (lowermost), Menbu and Guchuo sections (Jurassic of China)

Where: China (28.1° N, 86.0° E: paleocoordinates 40.6° S, 45.1° E)

• local area-level geographic resolution

When: Shuomo Formation, Tithonian (150.8 - 145.5 Ma)

• STRATIGRAPHIC RELATIONS: From upper Shuomo Fm, which underlies the Tithonian Guchuochun Fm. THICKNESS: From bed within >500 m thick exposure of Shuomo Fm. AGE: Tithonian. STRATIGRAPHIC POSITION: From lowermost part of formation near base of section, below PBDB# 64829.

• bed-level stratigraphic resolution

Environment/lithology: deep-water; poorly lithified, concretionary siltstone

• ENVIRONMENT: Offshore, deeper water, possibly continental slope.
• SPECIFIC LITHOLOGY: Laminated concretionary 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 64830: authorized by Austin Hendy, entered by Austin Hendy on 17.09.2006

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)