Fox Hills Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Fox Hills Formation
RTWyoming
 Montana
 Colorado
 North Dakota
 South Dakota
 Edmonton Formation
 Montana Group
SNIncludes Milliken Sandstone Member, Colgate Member, Stoneville Member, Trail City Sandstone Member, Timber Lake Sandstone Member, Bullhead Member.