Lower Shale Member

Geology

Formation: Fayetteville

Lithologies: "shale" (14), "limestone" (2)

Paleoenvironments: marine indet. (14), carbonate indet. (2)

Age range: base of the Meramecian to the top of the Chesterian or 342.90000 to 323.40000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Meramecian342.9 - 335.4USA (Arkansas) (67201 76116 76132 76135 76148 76151 76152)
Meramecian342.9 - 335.4USA (Oklahoma) (76150)
Chesterian335.4 - 323.4USA (Arkansas) (76117 76131 76133 76139 76144 76153 76154)
Chesterian335.4 - 323.4USA (Oklahoma) (76140)