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Ammonite Record from Bridge Creek Member of Greenhorn Limestone at Pueblo Reservoir State Recreation Area, Colorado

By
William A. Cobban
William A. Cobban
U.S. Geological Survey, Mail Stop 919, Box 25046
Denver Federal Center
Denver, Colorado
80225
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Published:
January 01, 1985

Abstract

Ammonites are listed from 25 beds of limestone and calcareous shale in the Upper Cretaceous Bridge Creek Member. Brief descriptions and faunal content are given for 14 distinctive beds of limestone. The lowest fourth of the member is late Cenomanian in age, the highest fourth is middle Turonian in age, and the rest is early Turonian. The greatest diversity of ammonites (9 species) occurs in one of the limestone beds of early Turonian age.

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SEPM Field Trip Guide

Fine-Grained Deposits and Biofacies of the Cretaceous Western Interior Seaway: Evidence of Cyclic Sedimentary Processes

Lisa M. Pratt
Lisa M. Pratt
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Erle G. Kauffman
Erle G. Kauffman
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Frederick B. Zelt
Frederick B. Zelt
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SEPM Society for Sedimentary Geology
Volume
4
ISBN electronic:
9781565762794
Publication date:
January 01, 1985

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