Ypresian
Wasatch-formatie
geological formation in the western United States
Clinker-bed breccia from the Wasatch Formation
Green River & Fowkes Formations, Santa Fe Group
Variable, up to
Wasatch Formation
stratigraphische Einheit in Wyoming (USA)
center
Fort Union, Williams Fork, Torrejon & Evanston Formations
Powder River, Green River, Wind River, Bighorn, Piceance & Uinta Basins