North Butte (UCMP V94083) (Eocene of the United States)

Where: Washakie County, Wyoming (43.9° N, 108.7° W: paleocoordinates 48.7° N, 91.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)

• in or below the Wa-0 redbed

•said to be "< 30 m" in the southern Bighorn Basin section; 15 m level is arbitrary

• group of beds-level stratigraphic resolution

Environment/lithology: "floodplain"; red siltstone

• "bright red, deeply weathered paleosols"

Size class: macrofossils

Reposited in the UCMP

Primary reference: P. A. Holroyd, J. H. Hutchison, and S. G. Strait. 2001. Turtle diversity and abundance through the lower Eocene Willwood Formation of the southern Bighorn Basin. University of Michigan Papers on Paleontology 33:97-108 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 59905: authorized by John Alroy, entered by John Alroy on 19.04.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• mammals not reported, but all reptiles are listed
Reptilia
 Testudines - Geoemydidae
Echmatemys sp. Hay 1906 turtle
 Testudines - Trionychidae
Trionychidae indet. Gray 1825 softshell turtle