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Data sets Publications Expeditions Thesaurus
Chowan River Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Pliocene
 .....upper Pliocene
 ......Chowan River Formation
RTVirginia
 North Carolina
 Chesapeake Group
SNIn Chesapeake Group. Added to Thesaurus in 1989.