Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
28
shale. Fracture is fine, shale dark gray
to bluish gray clay shale.
CR2-1
#18 B - Virgin Creek.
1.3 miles N. of Cheyenne River on
Route 63.
CR2-1
#18 C - Virgin Creek.
1.5 miles N. of Cheyenne River on
Route 63
Comments - Concretions layers present in
*18 A.B.C. No fossils found.
CR2-1
#18 D - 12.2 miles N of Cheyenne River on
Route 63. Probably Mobridge
member