Where: Nevada (39.6° N, 117.5° W: paleocoordinates 10.7° N, 45.6° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Trachyceras silberlingi ammonoid zone, Middle Member (Augusta Mountain Formation), Julian (235.0 - 232.0 Ma)

• Lateral tracing based on strike and dip of F1 (barring any covered faults) suggests a correlation with the lowermost part of the section (levels F10-F12). Trachyceras silberlingi biozone subdivided from older T. desatoyense zone.

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, argillaceous limestone

Size class: macrofossils

Collected in 2010, 2011

• Repository: Museo di Paleontologia (MPUM), Dipartimento di Scienze della Terra “Ardito Desio”, Università degli Studi di Milano

Primary reference: M. Balini, J. Jenks, and R. Martin. 2012. Taxonomy and stratigraphic significance of Trachyceras silberlingi n. sp., from the Lower Carnian of South Canyon (New Pass Range, central Nevada, USA). Bollettino della Società Paleontologica Italiana 51:127-136 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 151165: authorized by Matthew Clapham, entered by Matthew Clapham on 22.09.2013

Creative Commons license: CC BY (attribution)