Field Notebook: SD, ND 1962
Page 39
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Slopo wzsh 16,0-? silt, clayey grey micror silty dk gray clay. Scattered small ovoid cones white rinds, some ligh reddish brown "zumoeloid" types and some up to 0,18 in grey jackets.. Ammonoids (loc.88, sec 4, lot 1), float, from cones in this layer, chiefly from small white rind type. Weathered cone body chambers common also. 2 1.0+ "Limopsis" layer, here on fossils. Is cones weather rusty brown with golden calcite in outcrops loc. 3 11,0 Chiefly silt, gray to dk gray shelly & shaly silt with brown stain, Fe, that is most noticeable in lower silt on weath crops. Scattering of small cones near top but distrib. not clear in this outcrop, and zmonoids appear assoc with small cones (some in larger) right in with cone layer above ( 4 1.0+ Cone layer, chiefly brown, gray to pinkish brown weath cones. Irreg ovoid compressed H bedding = Protocruzidiz cones. Assoc ammonite remains loc. in the big cones also on smaller ones that appear to be among them. (Loc 88 sec 4, lot 2 In big cones are chiefly bivalves. D. nicolleti's.