Where: Yunnan, China (25.1° N, 102.1° E: paleocoordinates 33.7° N, 105.7° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Zhangjia'ao Member (Lufeng Formation), Sinemurian (199.3 - 190.8 Ma)

• 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; lithology not reported

Size class: macrofossils

Reposited in the IVPP

Primary reference: Z.-X. Luo, A. W. Crompton, and A.-L. Sun. 2001. A new mammaliaform from the Early Jurassic and evolution of mammalian characteristics. Science 292:1535-1540 [J. Alroy/J. Alroy/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 137354: authorized by Richard Butler, entered by Richard Butler on 14.12.2012

Creative Commons license: CC BY (attribution)