ACKNOWLEDGMENTS
We thank L. Chandler for useful comments on an earlier draft of this paper and F. Stangl of Midwestern State University for the donation of the Whisenhunt frog fossils for study. We also thank L. Abraczinskas of Michigan State University for the loan of important comparative material, and Georgia College and State University (GCSU) biology students P. Gay and Haley Davis for illustrations of some of the fossils. The senior author is thankful to GCSU for granting professional leave time to complete this and other paleo-related projects.