Where: Nevada (40.5° N, 118.1° W: paleocoordinates 11.1° N, 41.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Acrochordiceras hyatti ammonoid zone, Fossil Hill Member (Prida Formation), Bithynian (247.2 - 242.0 Ma)

• Unionvillites hadleyi subzone

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified limestone and lithified siltstone

Size class: macrofossils

Primary reference: C. Monnet, H. Bucher, M. Wasmer and J. Guex. 2010. Revision of the genus Acrochordiceras Hyatt, 1877 (Ammonoidea, Middle Triassic): morphology, biometry, biostratigraphy, and intra-specific variability. Palaeontology 53(5):961-996 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 143977: authorized by Matthew Clapham, entered by Matthew Clapham on 28.04.2013

Creative Commons license: CC BY (attribution)