| COMMON NAME | SCIENTIFIC NAME | STATUS* |
| Rocky Mountain Capshell | Acroloxus coloradensis | SC |
| Cylindrical Papershell | Anodontoides ferussacianus | SC |
*Status Codes:
FE = Federally Endangered
FT = Federally Threatened
SE = State Endangered
ST = State Threatened
SC = State Special Concern (not a statutory category)