Sharon Springs Member  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Sharon Springs Member
RTWyoming
 Montana
 Colorado
 Nebraska
 Kansas
 Manitoba
 South Dakota
 Pierre Shale
SNIn Pierre Shale. In NW Kansas, E Colorado, W and NW Nebraska, SE South Dakota, Wyoming, Montana, and Manitoba. Added to Thesaurus in 1995.