Where: Nevada (40.0° N, 117.6° W: paleocoordinates 10.8° N, 41.4° 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 115547: authorized by Matthew Clapham, entered by Christina Feng on 02.09.2011

Creative Commons license: CC BY (attribution)