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Data sets Publications Expeditions Thesaurus
Dundee Limestone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
 ....Middle Devonian
 .....Dundee Limestone
RTOntario
 Ohio
 Michigan
SNS Michigan, N Ohio and S Ontario. Added to Thesaurus in 1989.