Also known as Angistorhinus grandis holotype

Where: Fremont County, Wyoming (42.8° N, 108.8° W: paleocoordinates 11.7° N, 38.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Popo Agie Formation (Chugwater Group), Carnian (237.0 - 228.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Williston in 1904; reposited in the FMNH

• collected by Williston while at University of Chicago

Primary reference: S. W. Williston. 1904. Notice of some new reptiles from the Upper Trias of Wyoming. Journal of Geology 12:688-697 [R. Butler/R. Butler/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 107392: authorized by Richard Butler, entered by Richard Butler on 06.04.2011

Creative Commons license: CC BY (attribution)