Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
roots. I think it is in the paper place
just beneath the cystid gme but could
not positively determine this.
The general thickness appear as follows:
Clark Mills beds from Tentaecula li of
to cystid gme. 95!
Tentaculite beds. 388!
Spatulimit n Salina. 704.
Niagara 340
1527
To this must be added:
Beds above cystid gme at D. B. B. 146
Macrupleura beds. 52
1725 ft.
246!
Crisling D. B. B.