USGS D-1834 (Eocene of the United States)

Where: Big Horn County, Wyoming (44.2° N, 108.5° W: paleocoordinates 49.0° N, 91.4° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• "upper part of Willwod Formation (511 m level)"

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithology not reported

• "stage 4 + paleosol"

Size class: macrofossils

Collected by C. R. Schaff; reposited in the USGS

Primary reference: T. M. Bown and K. D. Rose. 1991. Evolutionary relationships of a new genus and three new species of Omomyid primates (Willwood Formation, Lower Eocene, Bighorn Basin, Wyoming). Journal of Human Evolution 20(6):465-480 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87317: authorized by John Alroy, entered by John Alroy on 15.03.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• remaining fauna not discussed
Mammalia
 Primates - Omomyidae
Steinius annectens n. sp. Bown and Rose 1991 tarsier