Baldwin Creek (Triassic of the United States)

Also known as Angistorhinus gracilis holotype

Where: Fremont County, Wyoming (42.8° N, 108.8° W: paleocoordinates 11.8° N, 38.7° W)

• coordinate based on nearby landmark

• 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 91570: authorized by Richard Butler, entered by Richard Butler on 02.10.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phytosauria -
Angistorhinus gracilis n. sp. Mehl 1915 archosaur
Holotype skull and complete postcranium