Where: Nevada (40.6° N, 117.0° W: paleocoordinates 11.9° N, 38.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Antler Peak Formation, Sakmarian (293.5 - 290.1 Ma)

• UCMP Locality V94012 occurs between strata containing fusulinid foraminifera (Verville et al., 1986). The several species of Schwagerina confirm a Wolfcampian age for UCMP 140632, consistent with the established geologic range of Helicoprion.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, brown siltstone

Size class: macrofossils

Collected by R.T. Ashinhurst; reposited in the UCMP

Primary reference: R. A. Hanger, E. E. Strong, and R. T. Ashinhurst. 1994. Helicoprion sp. from the Pennsylvanian and Permian Antler Peak Limestone, Lander County, Nevada. United States Geological Survey Open-File Report 94-436:24-31 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 130655: authorized by Matthew Clapham, entered by Matthew Clapham on 12.07.2012

Creative Commons license: CC BY (attribution)