Rose Run Sandstone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...lower Paleozoic
 ....Rose Run Sandstone
RTLower Ordovician
 Kentucky
 Ohio
 West Virginia
 Upper Cambrian
 Beekmantown Group
 Knox Group
SNIn Knox Group or Beekmantown Group. Upper Cambrian to Lower Ordovician. S Ohio, N Kentucky, and West Virginia. Indexed with age as applicable. Added to Thesaurus in 1995.