Field Notebook: SD, WY 1961
Page 95
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
The phosphatic steinkerns locally in small cones at contact, or loose accumulation with "funds" at contact. Also some scattered in upper foot of massive. Massive is not very fossiliferous, Venuella Sphaeriole and Cyprina steinkerns + shells common at top. Not much else, but the jacketed cone zone in and adjacent to which the most varied fauna occurs to E, is not very well exposed. Impression is that this good marine fauna in lower beds is not present here or along the bluff to N, CHECK BASE OF CLIFF from gully to Ezenest; at N end cliffs little or nothing. One freq. Spheno found in phosphatic nodules. "Bedded zone" distinct, contact with massive sharp. Should be described in detail and bedding structures recorded. Includes shell zone above first study succession as below Colgate? Probably cut cross section much above windmill, but may be able to offset to N. in dozers and take on into Lince. #3 - Hoodoo Ridge, loc. 105: Can get down into what Dobbin mapped as Pierre on SW side spur that lies S of main gulley draining this short ridge to W. The phosphatic nodule layer in on top just N. this gulley, is complete section of massive and between 50+ 100 ft of Tuzil City-like stuff beneath. Only fossils seen were in upper Massive + include Sphaerodiscus frags, Venuella (most common), Protarvulie (2nd most common.) P. uelozczua