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Shawan, Lufeng (Jurassic of China)

Where: Yunnan, China (25.2° N, 102.1° E: paleocoordinates 34.4° N, 104.6° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Shawan Member (Lufeng Formation), Hettangian (201.6 - 196.5 Ma)

• "Dull Purplish beds of the Lower Lufeng Formation"

•The Lufeng Formation has been divided into lower dark/dull purple beds (= Shawan Member) and upper dark/deep red beds (= Zhangjiawa Member). Luo & Wu (1994: In the Shadow of the Dinosaurs, pp. 251–270) argue on the basis of vertebrate biostratigraphy for a Hettangian–Sinemurian age for the Zhangjiawa Member and a Hettangian age for the Shawan Member.

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; red, argillaceous sandstone

• "dull purplish beds"; skeleton in "the dark red (in the field rather bright) clayish sandstone of homogenous texture. The bone is bluish gray sometimes dark gray or light gray in coloration. It is completely mineralized and very hard, sometimes as hard as the matrix."

Size class: macrofossils

Collected by M. Bien, C.-C. Young in 1938; reposited in the IVPP

Collection methods: quarrying, mechanical,

Primary reference: M. N. Bien. 1940. Discovery of Triassic saurischian and primitive mammalian remains at Lufeng, Yunnan. Bulletin of the Geological Society of China 20(3/4):225-234 [M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49501: authorized by Matthew Carrano, entered by Matthew Carrano on 18.04.2005, edited by Richard Butler and Graeme Lloyd

Creative Commons license: CC BY (attribution)