Joel D. Irish is Professor of Bioarchaeology in the Research Centre in Evolutionary Anthropology and Palaeoecology at Liverpool John Moores University, UK, and Professor Emeritus in the Anthropology Department at the University of Alaska Fairbanks. He is former Associate Editor of the American Journal of Physical Anthropology, and his publications focus on dental nonmetric variation and biological affinity. ... Read moreG. Richard Scott is Professor of Anthropology at the University of Nevada Reno, and Professor Emeritus at the University of Alaska Fairbanks, where he taught for 24 years.  He has published widely on issues relating to tooth crown and root morphology and biological affinity. Show Less