1Department of Anatomy, University of Pretoria, South Africa, 2Department of Anthropology, University of Alaska, Fairbanks, USA
Saturday All day, Clinch Concourse
The current study combined the Walker (2008) and Klales et al. (2012) methods to score non-metric cranial and pelvic traits on modern white and black South Africans. The contributions of genetics and the environment has led to population-specific distribution of non-metric traits (Garvin 2012). Krüger et al. (nd), demonstrated that the Walker (2008) method is applicable to a modern South African sample; however, the degree of expression is unique to the population. Similarly, high classification accuracies are noted on modern South Africans for non-metric pelvic traits for Klales et al. (2012) (Kenyhercz 2012). The purpose of this study was to combine non-metric data from 71 corresponding skulls and innominates to examine the degree of sexual dimorphism in a modern South African sample as well as to examine correct classifications derived from these non-metric traits. Depending on the statistical analysis and variables employed, correct classifications ranged from 82-100%. The traits from the innominate consistently provided higher classifications than traits from the skull, even outperforming a combination of skull and innominate traits, thus indicating greater sexual dimorphism in the innominate as opposed to the skull in modern South Africans.