Emperador Limestone Member
Geology
Formation: Culebra
Lithologies: mudstone (1), sandstone (2), grainstone (3), "reef rocks" (3), "limestone" (17)
Paleoenvironments: carbonate indet. (14), lagoonal/restricted shallow subtidal (1), reef, buildup or bioherm (7)
Age range: Aquitanian or 23.03000 to 20.44000 Ma