Image: Fossil bird (Green River Formation, Lower Eocene; Fossil Lake Basin, southwestern Wyoming, USA) (15529177925)

Description: Undetermined fossil bird species in marlstone from the Eocene of Wyoming, USA (public display, FMHH PA 778, Field Museum of Natural History, Chicago, Illinois, USA). The Green River Formation of Utah-Colorado-Wyoming is famous for having vast oil shale deposits and for having exquisitely-preserved fossils. Fossil Butte National Monument in southwestern Wyoming preserves and displays some of these high-quality fossils. Leaves and fish are the most common large fossils in the Fossil Lake Basin of the Green River Fm. Classification: Animalia, Chordata, Vertebrata, Aves Stratigraphy: Fossil Butte Member, Green River Formation, upper Wasatchian Stage (Wa4)/Ypresian Stage/Lostcabinian, Lower Eocene Locality: Fossil Lake Basin, southwestern Wyoming, USA
Title: Fossil bird (Green River Formation, Lower Eocene; Fossil Lake Basin, southwestern Wyoming, USA) (15529177925)
Credit: Fossil bird (Green River Formation, Lower Eocene; Fossil Lake Basin, southwestern Wyoming, USA)
Author: James St. John
Usage Terms: Creative Commons Attribution 2.0
License: CC BY 2.0
License Link: https://creativecommons.org/licenses/by/2.0
Attribution Required?: Yes