Borealosuchus wilsoni fossil crocodilian (Green River Formation, Lower Eocene; Fossil Lake Basin, southwestern Wyoming, USA) 1
Borealosuchus wilsoni (Mook, 1959) fossil crocodilian in lacustrine marlstone from the Eocene of Wyoming, USA (public display, FMNH PR 1674, 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, Reptilia, Crocodyliformes, Neosuchia, Eusuchia, Crocodylia
Stratigraphy: Fossil Butte Member, Green River Formation, upper Wasatchian Stage (Wa4)/Ypresian Stage/Lostcabinian, Lower Eocene
Locality: Fossil Lake Basin, southwestern Wyoming, USA