My research investigates the comparative anatomy of the skull in primates as it relates to human evolution. I employ the comparative method and direct studies of fossil hominins to make inferences regarding the evolutionary processes that operated during the course of human evolution, as well as the patterns, documented by the fossil record, that were produced by these processes.
2018 C. Terhune, T. Ritzman, C. Robinson. Mandibular ramus shape variation and ontogeny in Homo sapiens and Homo neanderthalensis. Journal of Human Evolution 121:55-71.
2018 K. Warren, T. Ritzman, R. Humphreys, C. Percival, B. Hallgrimsson, R. Ackermann. Craniomandibular form and size variation of first generation mouse hybrids: A model for hominin hybridization. Journal of Human Evolution 116:57-74.
2017 T. Ritzman, N. Banovich, K. Buss, J. Guida, M. Rubel, J. Pinney, B. Khang, M. Ravosa, A. Stone. Facing the facts: The Runx2 gene is associated with facial morphology in primates. Journal of Human Evolution 111:139-151.
2016 T. Ritzman, C. Terhune, C. Robinson, P. Gunz. Mandibular ramus shape of Australopithecus sediba suggests a single variable species. Journal of Human Evolution 100: 54-64.