Upper section Member
Geology
Formation: Osgood Shale
Lithologies: "shale" (1), "limestone" (1)
Paleoenvironments: deep subtidal shelf (1)
Age range: Silurian or 443.40000 to 419.20000 Ma
Upper section Member
Formation: Osgood Shale
Lithologies: "shale" (1), "limestone" (1)
Paleoenvironments: deep subtidal shelf (1)