Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Bullhead mbr.
Non-existent near Timber lake
Thickening gradually toward west,
until Begins to Replace Timber
like sand. & becomes older
to west.
Poor marine environment only
one marine segment of
about 10-12 feet in 50-60
ft. of Timly bedded ss, s
sandy shs. & silts.
Cuts into Pierre Time near
Bed Scaffold.