East End of Haystack Mountain (Eocene of the United States)

Where: Sweetwater County, Wyoming (41.4° N, 108.1° W: paleocoordinates 45.2° N, 94.3° W)

• coordinate based on nearby landmark

When: Adobe Town Member (Washakie Formation), Bridgerian (50.3 - 46.2 Ma)

• Fifteen feet below “white layer” (= Granger’s [1909] stratum no. 11) according to W. Granger’s 1906 field notes on file at AMNH; approximately bed 619 of Roehler (1973)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Reposited in the AMNH

Primary reference: S. Tomiya, S. P. Zack, M. Spaulding and J. J. Flynn. 2021. Carnivorous mammals from the middle Eocene Washakie Formation, Wyoming, USA, and their diversity trajectory in a post-warming world. Journal of Paleontology Memoir 95(82):1-115 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 223510: authorized by Patricia Holroyd, entered by Patricia Holroyd on 14.11.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Creodonta - Hyaenodontidae
Sinopa lania n. sp.
Sinopa lania n. sp. Matthew 1909 creodont