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Data sets Publications Expeditions Thesaurus
Watahomigi Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Watahomigi Formation
RTArizona
 Atokan
 Morrowan
SNLower and Middle Pennsylvanian. NW Arizona. Added to Thesaurus in 1985.