ammonites

B. J. Witzke and G. A. Ludvigson 1996

Full reference
B. J. Witzke and G. A. Ludvigson. 1996. Mid-Cretaceous fluvial deposits of the eastern margin, western interior basin: Nishnabotna Member, Dakota Formation: A field guide to the Cretaceous of Guthrie County. Geological Survey Bureau Guidebook Series (17)1-75 [H. Sims/H. Sims]
Metadata
ID number:  41847
Created:  2012-05-31 07:05:04
Publication type:  guidebook
Taxonomy:  stated with evidence
Language:  English
Comments: Guide for field trip No.1 at 1996 North-Central Section Annual Meeting, Geological Society of America, published by Iowa Department of Natural Resources.
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