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
Collections

Time interval Ma Country or state Original ID and collection number
Bridgerian50.3 - 46.2USA (Wyoming) (16209 168275 168278 168280 168281 176727 176728 176729 176730 176731 176732 176733 176735)