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Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 31 (1924) > Annual Issue

 

Document Type

Research

Abstract

This type of cephalopod began in the Devonian and became the fore-runner of the Mesozoic ammonites. A few species occur in the Devonian, Mississippian, and Pennsylvanian rocks of Iowa. The relationships and significance of these are pointed out.

Publication Date

1924

Journal Title

Proceedings of the Iowa Academy of Science

Volume

31

Issue

1

First Page

340

Last Page

340

Copyright

©1924 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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