Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
As there is no bed between the Clinton
and Rochester it seems to follow that the
Clinton is the time of sea invasion and deep
ocean while the Rochester is of sea retro-
gression. Under these circumstances the
chances are that the Clinton will be more
persistent in the oranim sections than the
Rochester. The latter will vanish from
the top downward in the section finally
leaving the Clinton.