Article

The Occurrence of Petrodus and Other Fossil Shark Remains in the Pennsylvania of Iowa

Author: Gerard R. Case

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How to Cite: Case, G. R. (1970) “The Occurrence of Petrodus and Other Fossil Shark Remains in the Pennsylvania of Iowa”, The Annals of Iowa. 40(6). doi: https://doi.org/10.17077/0003-4827.7967