Midway Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Paleocene
 .....Midway Group
RTKentucky
 Missouri
 Illinois
 Mississippi
 Texas
 Alabama
 Florida
 Georgia
 Tennessee
 Arkansas
 Clayton Formation
 Naheola Formation
 Porters Creek Formation
SNIn SE United States from W Georgia to S Texas, Arkansas, SW Illinois, Kentucky, SE Missouri, and W Tennessee. Added to Thesaurus in 1981.