Where: Uintah Basin County, Utah (40.5° N, 110.0° W: paleocoordinates 45.4° N, 94.4° W)

• coordinate estimated from map

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

• Early Eocene

Environment/lithology: lacustrine

Size class: macrofossils

Preservation: trace

Collection methods: 4 tracks are reported: Holotype BYU B20 and Paratypes: BYU-ACC 87.4.17, SMM P66.6.1 and SMM P66.6.10

Primary reference: S.-Y. Yang, M.G. Lockley, R. Greben, B.R. Erickson, and S.-K. Lim. 1995. Flamingo and duck-like bird tracks from the Late Cretaceous and Early Tertiary: evidence and implications. Ichnos 4:21-34 [J. Alroy/S. Kuemmell] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 60584: authorized by John Alroy, entered by Susanna Kümmell on 18.05.2006

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