er55d - Pre-Wisconsinan Drift Plains |
er67h - Southern Sandstone Ridges |
er68a - Cumberland Plateau |
er68c - Plateau Escarpment |
er69d - Dissected Appalachian Plateau |
er69e - Cumberland Mountain Thrust Block |
er70b - Monongahela Transition Zone |
er70d - Knobs-Lower Scioto Dissected Plateau |
er70f - Ohio/Kentucky Carboniferous Plateau |
er70g - Northern Forested Plateau Escarpment |
er70h - Carter Hills |
er71a - Crawford-Mammoth Cave Uplands |
er71b - Mitchell Plain |
er71c - Knobs-Norman Upland |
er71d - Outer Bluegrass |
er71e - Western Pennyroyal Karst Plain |
er71f - Western Highland Rim |
er71g - Eastern Highland Rim |
er71h - Outer Nashville Basin |
er71k - Hills of the Bluegrass | er71k - Inner Bluegrass |
er71m - Northern Shawnee Hills | er71m - Southern Shawnee Hills |
er72a - Wabash-Ohio Bottomlands | er72a - Green River-Southern Wabash Lowlands |
er72h - Caseyville Hills | er72h - Northern Holocene Meander Belts |
er73c - St. Francis Lowlands | er73c - Bluff Hills |
er74b - Loess Plains |