Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
to very large flat avoide.
Shell goes from pzyom at base
to fizhy, lighter, chunkier at top
(1) 6.0+
Shell somewhat bretonite? Shell worthy
to checked outcrop some though
tissile underlit. Zone large is sept
cones in upper foot?, locally, plenty
type, much assoc. gypsum.
8