Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
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Transcription
Sep. 18 Saturday, Richmond Ind.
2nd of at 6 A.M. and collected a jar of the
morning along the West Fork of the Whitewater up to
Thistlewaite Falls. The highest beds are the Rhyz-
ochitrema dentata beds. Here R. capax is very rare,
below are the beds abounding in Stiptulasyna rusticum
and R. capax more common. At Thistlewaite
Falls level R. capax and small forms are
very common. Therefore the development is from the
high convex forms of R. capax to R. paradentella
that I collected yesterday at the very top of the Rich-
mond.
The R. dentata beds are particularly rich
in fossils of which 9/10 are Ostraceli podrid.
Brachiopods are apt to be single valves and
most of them were dead shells for they are
usually worn away by Bysson. In fact at all
levels the Byssons dominate the life and
take possession of all prominences once dead
to grow upon. The commonest shell of these
beds is R. dentata. Raphiguina alternate
is very rare. Gastropods are bivalves are
always present but the specimens are too
few to talk about.