Yang Tsao Ti, Lufeng (lower) (Jurassic of China)

Where: Yunnan, China (25.2° N, 102.1° E: paleocoordinates 34.4° N, 104.7° E)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

When: Shawan Member (Lufeng Formation), Hettangian (201.3 - 199.3 Ma)

• Lufeng Mesozoic Sediments divided into Lower and Upper Series. Units 1-4 in Lower Series, Units 5-8 in Upper Series.

•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 probable Sinemurian age for the Zhangjiawa Member and a Hettangian age for the Shawan Member.

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; poorly lithified, concretionary, green, red, blue, calcareous claystone

• First fossiliferrous beds occur 200 m abovebase of unit 2. Morganucodon found in this bed.
• "They are a somewhat compacted red clay with purplish and light blue-green streaks and contain many calcareous nodules"

Size classes: macrofossils, mesofossils

Collected by E. Oehler in 1948

Collection methods: quarrying, mechanical,

Primary reference: H. W. Rigney. 1963. A specimen of Morganucodon from Yunnan. Nature 197(4872):1122-1123 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 11805: authorized by Will Clyde, entered by John Finarelli on 12.09.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• Fossiliferrous units described as "rich in saurischians" and therapsids: Beinotherium and Sinocodon are also reported from same expedition, but no stratigraphic information given.
 Therapsida -
Morganucodon oehleri n. sp. Rigney 1963 mammaliaform
CUP 2320, UCL