Where: Pershing County, Nevada (40.0° N, 117.5° W: paleocoordinates 10.5° N, 41.5° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Gymnotoceras rotelliformis ammonoid zone, Fossil Hill Member (Favret Formation), Illyrian (247.2 - 242.0 Ma)

• uppermost Illyrian

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by H. Bucher; reposited in the USNM

Collection methods: surface (float),

Primary reference: P. M. Sander and H. Boucher. 1990. On the presence of Mixosaurus (Ichthyopterygia: Reptilia) in the Middle Triassic of Nevada. Journal of Paleontology 64(1):161-164 [M. Carrano/H. Street]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 102473: authorized by Matthew Carrano, entered by Hallie Street on 15.01.2011

Creative Commons license: CC BY (attribution)