Where: Nevada (40.1° N, 117.5° W: paleocoordinates 10.9° N, 41.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Rotelliformis zone, Illyrian (247.2 - 242.0 Ma)

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Primary reference: C. Monnet and H. Bucher. 2005. New Middle and Late Anisian (Middle Triassic) Ammonoid Faunas From Northwestern Nevada(USA): Taxonomy and Biochronology. Fossils and Strata 52:1-121 [M. Clapham/C. Feng/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 116383: authorized by Matthew Clapham, entered by Christina Feng on 07.09.2011

Creative Commons license: CC BY (attribution)