ammonites
Yangjuan, Hill South(S4), Bed 81 (Triassic of China)

Where: Guizhou, China (25.5° N, 104.9° E: paleocoordinates 11.7° N, 94.3° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Anisian (247.2 - 242.0 Ma)

• Four stratigraphic sections measured from an area ~ 1 km2: Chupiwa South (N 25°31'46", E 104°53'48"); River Northwest (N 25°31'43, E 104°54'33"); Dry Well (N 25°31'25", E 104°53'55"); and Hill South (N 25°31'08", E 104°54'20")

• bed-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Collection methods: bulk, quarrying, mechanical,

• Square-meter sections were removed from the cliffs and broken down by hand.

Primary reference: R. Motani, D.-Y. Jiang, A. Tintori, Y.-L. Sun, W.-C. Hao, A. Boyd, S. Hinic-Frlog, L. Schmitz, J.-Y. Shin and Z.-Y. Sun. 2008. Horizons and assemblages of Middle Triassic marine reptiles from Panxian. Guizhou, China. Journal of Vertebrate Paleontology 28(3):900-903 [M. Carrano/H. Street] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 100299: authorized by Matt Carrano, entered by Hallie Street on 07.12.2010