Recently discovered Conodonts in the Oneota formation of Iowa are illustrated and their stratigraphic significance is discussed

Furnish, W. M.

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Oneota Conodonts

University of Northern Iowa

Proceedings of the Iowa Academy of ScienceVolume 43 | Annual Issue Article 681936Oneota ConodontsW. M. FurnishState University of IowaCopyright © Copyright 1936 by the Iowa Academy of Science, Inc.Follow this and additional works at: https://scholarworks.uni.edu/piasThis Research is brought to you for free and open access by UNI ScholarWorks. It has been accepted for inclusion in Proceedings of the Iowa Academyof Science by an authorized editor of UNI ScholarWorks. For more information, please contact scholarworks@uni.edu.Recommended CitationFurnish, W. M. (1936) "Oneota Conodonts," Proceedings of the Iowa Academy of Science: Vol. 43: No. 1 , Article 68.Available at: https://scholarworks.uni.edu/pias/vol43/iss1/68250 IOWA ACADEMY OF SCIENCE IVoL. XLIII Olenus or Dicellocephalus zone, his middle Cambric, and Lap-worth's Ordovicic his Upper Cambric. Compromise with over-lapping Siluric of Murchison removes from the Sedgwick Cam-bric his Upper Cambric, leaving his Middle Cambric the Upper, or Late Cambric of our day, and his Lower Cambric our Middle Cambric, while we add a new Early Cambric. Either one of two courses seems open to us in Iowa ( 1) Recog-nition of a three-fold division, the present Late Cambric and Mid Cambric as they are, and imply beneath a hypothetical Early Cam-bric, represented in Iowa by a great strata! hiatus, with expectation that an equivalent sedimental column will be, sooner or later, found somewhere in nearby territory; or (2) assumption that the entire Cambric is two-fold in character, as is now Sedgwick's orginal section, calling the present Mid Cambric Early Cambric. In either case Walcott's "Lower" Cambric is definitely Ta conic and pre-Paleozoic. DES MoINES, Iow A. CURRENT EARLY PALEOZOIC CLASSIFICATION I~ IOWA A. C. TROWBRIDGE Presentation and discussion of a classification of Cambrian, Ordovician, and Silurian strata recently adopted by the Iowa Geological Survey for use in this state. STATE UNIVERSITY or' IowA, IowA CITY, IowA. ONEOTA CONODONTS W. M. FcRNISH Recently discovered Conoclonts in the Oneota formation of Iowa are illustrated and their stratigraphic significance is dis-cussed. STATE UNIVERSITY oF IowA, IowA CITY, IowA. 1Furnish: Oneota ConodontsPublished by UNI ScholarWorks, 1936

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Oneota Conodonts

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University of Northern Iowa