| 32C:Desertic Basins, Central |
| 43BC:Central Rocky Mountains, Central |
| 44BC:Central Rocky Mountain Valleys, Central |
| 46C:Northern Rocky Mountain Foothills, Central |
| 46SW:Northern Rocky Mountain Foothills, South West |
| 52C:Glaciated Plains, Central |
| 58AC:Sedimentary Plains, Central |
| 46SE:Northern Rocky Mountain Foothills, South East |
| 53AE:Glaciated Plains, East |
| 54E:Soft Shale Plains, East |
| 58AE:Sedimentary Plains, East |
| 58BE:Northern Rolling High Plains, Southern Part |
| 58CE:Northern Rolling High Plains, Northeastern Part |
| 58DE:Northern Rolling High Plains, Eastern Part |
| 60AE:Pierre Shale Plains and Badlands |
| 60BE:Pierre Shale Plains, East |
| 43BN:Central Rocky Mountains, North |
| 46N:Northern Rocky Mountain Foothills, North |
| 52N:Glaciated Plains, North |
| 43BSE:Central Rocky Mountains, South East |
| 43BSW:Central Rocky Mountains, South West |
| 44BSW:Central Rocky Mountain Valleys, South West |
| 43AW:Northern Rocky Mountains, West |
| 43BW:Central Rocky Mountains, West |
| 44AW:Northern Rocky Mountain Valleys, West |