1. Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA.
2. Jackson School of Geoscience, University of Texas at Austin, Austin, TX, USA.
3. Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, USA.
4. Richard Gilder Graduate School, American Museum of Natural History, New York, NY, USA.
5. Division of Paleontology, American Museum of Natural History, New York, NY, USA.