Where: Nevada (40.7° N, 117.9° W: paleocoordinates 17.3° N, 53.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: magnus ammonoid zone, Dry Canyon Formation, Lacian (221.5 - 215.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Reposited in the UMMP

Primary reference: B. Senowbari-Daryan and G. D. Stanley. 1992. Late Triassic thalamid sponges from Nevada. Journal of Paleontology 66:183-193 [W. Kiessling/B. Brenneis/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 144577: authorized by Matthew Clapham, entered by Matthew Clapham on 11.05.2013

Creative Commons license: CC BY (attribution)