Where: Nevada (40.0° N, 115.8° W: paleocoordinates 13.0° N, 36.9° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Artinskian (290.1 - 279.3 Ma)

• Lower Permian (Wolfcampian-Leonardian) strata, Units "Pa" to "Pgu" (defined by Larson and Riva, 1963), unconformably overlie the chert-clastic-rich packstone and wackestone of the Middle Pennsylvanian (Atokan-Desmoinesian) Ely Group. Conodonts Mesogondolella bisselli, Neostreptognathodus pequopensis indicate Artinskian age.

• bed-level stratigraphic resolution

Environment/lithology: basinal (); lithified, concretionary lime mudstone

Size class: macrofossils

Preservation: concretion

Primary reference: T. A. Schiappa, C. Spinosa, and W. S. Snyder. 1995. Nevadoceras, a new Early Permian adrianitid (Ammonoidea) from Nevada. Journal of Paleontology 69(6):1073-1079 [T. Olszewski/L. Fall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61734: authorized by Tom Olszewski, entered by Leigh Fall on 26.06.2006

Creative Commons license: CC BY (attribution)