Cheyenne Sandstone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Lower Cretaceous
 .....Cheyenne Sandstone
RTOklahoma
 Colorado
 Kansas
SNUnderlies Kiowa Formation; overlies Morrison Formation. SW Kansas, SE Colorado, and W Oklahoma.