Manning Canyon Shale  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Manning Canyon Shale
RTUtah
 Upper Mississippian
 Lower Pennsylvanian
SNUpper Mississippian and Lower Pennsylvanian. N Utah. Indexed with ages as applicable. Added to Thesaurus in 1985.