Heterotrypa ulrichi

The bryozoan Heterotrypa ulrichi from the Ordovician of Indiana.

Source: Polly, P. D. 2013. Department of Geological Sciences, Indiana University.

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Dr. P. David Polly

Department of Geological Sciences
Indiana University
1001 E. 10th Street
Bloomington, IN 47405
pdpolly@indiana.edu
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