Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Fox Hills fm.
Timber Lake
Trail City.
East ends of Moreau - Grand
Moreau - Cheyenne Divides.
- Silty silvery gray Sh-well developed fossil zones. Becomes more shaly & darkens Toward the west loosing fossil zones.
80
70
60
50
40
30
20
10
0
Abyssinus esp in Granti
burrew
Burrew
Protoeardia
Limopsis - Gervillia
Lower niccolletii
000 glauconite
/// Jarosite
cop. from Wange, (1961)