ACKNOWLEDGMENTS

I thank the following for access to specimens: J. Barry (Harvard University, Cambridge), H. Mayr (Bayerische Staatssammlung für Paläontologie und historische Geologie, Munich), A. Milner and S. Chapman (Natural History Museum, London), J.-C. Rage (Museum national d'Histoire naturelle, Paris), G. Zug (Smithsonian Institution), C. Bell (University of Texas, Austin), L. Jacobs (Southern Methodist University, Dallas). I thank C. Badgley, L. Flynn, L. Jacobs, and L. Taylor for inviting me to contribute to this volume. Funding was provided by the Department of Geological Sciences and Institute for the Study of Earth and Man, Southern Methodist University, the Society of Vertebrate Paleontology, National Science Foundation grants SBR-9408664 and DBS-9196211 to J. Kelley, and a National Science Foundation Postdoctoral Fellowship (NSF 98-162, award number 0204082) to myself. This research partially fulfilled the requirements for a Ph.D. from the Department of Geological Sciences, Southern Methodist University. C. Badgley, C. Bell, B. Jacobs, L. Jacobs, J. Wilson, and D. Winkler read various versions of this manuscript. Their comments and critiques greatly improved its quality. Many, many thanks to the Siwaliphiles for their tolerance and education through four field seasons on the Potwar Plateau. Finally, thanks Will.