Twin Buttes Member
Geology
Formation: Bridger
Lithologies: not reported (12), mudstone (1)
Paleoenvironments: terrestrial indet. (12), lacustrine - large (1)
Age range: Bridgerian or 50.30000 to 46.20000 Ma
Twin Buttes Member
Formation: Bridger
Lithologies: not reported (12), mudstone (1)
Paleoenvironments: terrestrial indet. (12), lacustrine - large (1)