Gypsum Spring Formation
Geology
Members: unnamed (7)
Lithologies: "shale" (1), lime mudstone (2), wackestone (1), grainstone (1), "limestone" (3), dolomite (1)
Paleoenvironments: marine indet. (3), terrestrial indet. (1), peritidal (1), open shallow subtidal (2)
Age range: Late/Upper Bajocian or 168.60000 to 168.20000 Ma