Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
several specimens of Rhynchonella
caja.
The Hudson River shales in
this region is about 75 feet thick above
the lake level. Above this comes
the Quijara Limestone forming the cliff
the lower layers of which are very
chert. Not here are there any good
specimens the whole being covered
by the Quajara talus.