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Data sets Publications Expeditions Thesaurus
Hanson Creek Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Hanson Creek Formation
RTOrdovician
 Silurian
 Nevada
SNCentral Nevada. Middle Ordovician to Silurian. Indexed with ages as applicable. Added to Thesaurus in 1989.