1. Department of Anatomy, New York College of Osteopathic Medicine, Old Westbury, NY 11568, USA.
2. Division of Paleontology, American Museum of Natural History, New York, NY 10024, USA.
3. ICREA, Institut Català de Paleoecologia Humana i Evolució Social, Universitat Rovira i Virgili, 43002 Tarragona, Spain.
4. Department of Biology, Bay Path College, Longmeadow, MA 01106, USA.