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Data sets Publications Expeditions Thesaurus
Beekmantown Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Lower Ordovician
 .....Beekmantown Group
RTOntario
 Quebec
 Virginia
 Pennsylvania
 Vermont
 New York
 Maryland
 Tennessee
 Rose Run Sandstone
SNFrom SE Canada to Virginia. Added to Thesaurus in 1985.