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Dr Todd R Yokley

Central Classroom 106Q

Personal Biography Statement

Dr. Yokley is a paleoanthropologist whose research involves analyzing how climate and other selective pressures have shaped human evolution. To date, he has concentrated primarily on variation in the nose and nasal passages, which he has measured through a combination of traditional skeletal measurements and soft-tissue measurements derived from clinical CT scans. This research has revealed a pattern of variation in human nasal passage structure that appears to reflect selection for more efficient heat and moisture exchange under certain environmental conditions. Dr. Yokley is also interested in broader issues such as bioenergetics of past human populations, the emergence of modern humans, and climatic adaptation among non-human mammals.

Educational Biography

Ph.D. in Biological Anthropology and Anatomy, 2006, Duke University.
M.A. in Anthropology, 1999, Northern Illinois University.
B.S. in Zoology (Anthropology Minor), 1996, University of Tennessee.

Selected Publications

Froehle AW, Yokley TR, and Churchill SE (2013). Energetics and the origin of modern humans. In: Smith FH and Ahern JCM, editors. The Origins of Modern Humans: Biology Reconsidered, Second Edition. Hoboken: Wiley-Blackwell, pp. 285-320.

Holton NE, Yokley TR, and Butaric LN (2013). The morphological interaction between the nasal cavity and maxillary sinuses in living humans. The Anatomical Record 296: 414-426.

Holton NE, Yokley TR, and Figueroa A (2012). Nasal septal and craniofacial form in European- and African-derived populations. Journal of Anatomy 221, 263-274.

Holton NE, Yokley TR, and Franciscus RG (2011). Climatic adaptation and Neandertal facial evolution: a comment on Rae et al. (2011). Journal of Human Evolution 61, 624-627.

Yokley TR (2009). Ecogeographic variation in human nasal passages. American Journal of Physical Anthropology 138, 11-22.

Yokley TR and Churchill SE (2006). Archaic and modern human distal humeral morphology. Journal of Human Evolution 51, 603-616.

Courses Taught


Office Hours

Monday - [14:00 to 15:00]
Tuesday - [12:00 to 13:30]
Wednesday - [14:00 to 15:00]
Thursday - [12:00 to 13:30]

Photo of Dr Todd R Yokley

Current Semester Schedule

50022 ANT-2100-001 Human Evolution MW 0930-1045
50500 ANT-1010-002 Physical Anthro & Prehistory TR 1400-1540
52750 ANT-3110-001 Human Variation MW 1230-1345
55217 ANT-3790-001 Human Osteology in Anth Persp TR 0930-1045
55559 ANT-3980-002 Internship Anthropology TBA TBA-TBA