Willow Creek (Triassic of the United States)

Also known as Anaschisma holotype site

Where: Fremont County, Wyoming (42.7° N, 108.7° W: paleocoordinates 11.6° N, 38.6° W)

• coordinate estimated from map

• local area-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Brown in 1902; reposited in the FMNH

Primary reference: E. B. Branson. 1905. Structure and relationships of American Labyrinthodontidae. Journal of Geology 13:568-610 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 91900: authorized by Richard Butler, entered by Richard Butler on 23.10.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

 Temnospondyli - Metoposauridae
Anaschisma browni n. gen. n. sp. Branson 1905 tetrapod
FMNH UC 447 (holotype), skull
Anaschisma brachygnatha n. sp. Branson 1905 tetrapod
FMNH UC 448, skull
 Phytosauria -
Phytosauria indet. Jaeger 1828 archosaur