Kaskaskia Sequence  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...upper Paleozoic
 ....Kaskaskia Sequence
RTDevonian
 Mississippian
SNDevonian and Mississippian. Central and western U.S. Indexed with ages as applicable. Added to Thesaurus in 1985.