Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Skull Cr. Sh.
Fall River fm.
L
A
K
O
T
A
Upru
Claystone unit
SS
Massive siltstone
Claystone unit
Bedded ss unit
Ostracodal sh.
E.ls
SS.
Grey clst.
Morrisson
Green clst