Where: Big Horn County, Wyoming (44.6° N, 108.5° W: paleocoordinates 49.2° N, 91.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Willwood Formation, Early/Lower Eocene (55.8 - 48.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithified siliciclastic sediments

Size classes: macrofossils, mesofossils

Reposited in the UMMP

Collection methods: surface (float), surface (in situ),

Primary reference: D. W. Krause. 1982. Journal of Paleontology 56(2) [J. Alroy/J. Alroy] more details

PaleoDB collection 15586: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Leah Gannon

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)