Dr. Paul Constantino is an Associate Professor in the Department of Biology at Saint Michael's College, Vermont, USA. His research interests include evolutionary morphology of the skull and dentition, dietary adaptations and paleoanthropology. Dr. Kaye Reed is a Professor and Director of the School of Human Evolution and Social Change at Arizona State University. Her research interests include early hominid paleoecology, mammal paleontology, community ecology, mammalian biogeography, human evolution, primate evolution and macroecology. Dr. Bernard Wood is a Professor of Human Origins and Human Evolutionary Anatomy in the Center for the Advanced Study of Human Paleobiology at George Washington University. His research interests include understanding the evolution of higher primates, hominin taxonomy and hominin evolutionary biology.