1. The Ohio State University at Marion, Department of Evolution, Ecology, and Organismal Biology, 1459 Mount Vernon Avenue, Marion, OH 43302, USA;
2. Research Associate, Section of Vertebrate Paleontology, Carnegie Museum of Natural History 4400 Forbes Avenue, Pittsburgh, PA 15213, USA;
3. East Tennessee State University, Department of Geosciences, Don Sundquist Center of Excellence in Paleontology, PO Box 70357, Johnson City, TN 37614, USA