Field Notebook: SD, NE 1959
Page 113
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
only one had a few D. nicolletii's. Also, sparingly present in these layers are small (up to 0.8") flat-ovoid limestone cones with whitish patina and some "vermicular" markings on outside. One small ovoid cone with part of one nicolleti and a concretization living chamber of one of the big nodosus-type cephalites, was found. No hard blue is D. nic cones without jackets. 2) The Peanut-Brittle concretion layer is present but very sparingly fossiliferous. The cones are distinctively orange-brown- weathering, ovoid, and break up to angular chunks stained OB and purple-brown. Some have one or two Limopsis scattered about, and about one in 20 is a typical Limopsis-packed cone. The layer is very helpful in locating in section. 3) No Gervillii cones seen in any of the exposures though a few G's occur locally with the PB. 4) Nothing seen in place between PB's and Protocardia cones