ACKNOWLEDGMENTS

We would like to acknowledge two anonymous reviewers whose helpful comments on an earlier draft of this manuscript greatly improved it. We would also like to thank Appalachian State University’s Research Council for grants awarded to ABH to set up the heavy liquid laboratory, as well as its Department of Geology for the Undergraduate Research Assistantship awarded to JSM. We would also like to thank the Office of Student Research for helping to fund both the research and the trips to present the preliminary findings in Charlotte (Southeastern Section, Geological Society of America) and Cleveland (Society of Vertebrate Paleontology) and a University Undergraduate Research Assistantship to JSM. We would also like to thank Vince Schneider at the North Carolina Museum and Spencer Lucas at the New Mexico Museum of Natural History for allowing the loan of fossiliferous material. Several undergraduates at Appalachian State University assisted in processing material.

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