Harpersville Formation

Geology

Group: Cisco

Members: unnamed (8), Belknap ls (2), Crystal Falls (1), Crystal Falls ls (1), Saddle Creek limestone (1), Saddle Creek ls (3), Waldrip Shale (1)

Lithologies: "shale" (1), marl (1), "limestone" (3), "carbonate" (13)

Paleoenvironments: carbonate indet. (2), offshore indet. (1)

Age range: Virgilian or 303.70000 to 298.90000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Virgilian303.7 - 298.9USA (Texas) (121462 217193 217231)
Virgilian - Wolfcampian303.7 - 286.0USA (Texas) (1085 1090 1092 1093 1094 1095 1097 1099 1100 1105 1106 1107 1108 1111)