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.