Assessing Population Variation Using Heritable Nonmetric Traits

This research investigates the use of heritable nonmetric traits as a means for assessing population variation and biological relatedness within an archaeological sample using the commingled human skeletal tomb assemblage from the Bronze Age site of Tell Abraq, United Arab Emirates (2100-2000 BCE). A total of 410 individuals representing all ages and both sexes were interred in the Umm an-Nar period tomb. An analysis of sixteen heritable nonmetric traits was conducted on the adult human skeletal remains for both cranial and postcranial elements. Of the eight elements analyzed, one element in particular displayed anomalies rarely described in archaeological contexts. Seven patellae were identified as emarginated, six as bipartite and one as tripartite. The frequency of traits found here are inconclusive in suggesting biological homogeneity or heterogeneity. However, the baseline data provided here may be useful in investigating biological homogeneity in other studies in the future and may allow us to look at social practices such as marriage patterns. These data may also provide an additional line of evidence to the previous hypotheses concerning consanguineous marriage for this assemblage.

Trade Relationships and Gene Flow at Pottery Mound Pueblo, New Mexico

Pottery Mound is a large Ancestral Puebloan site situated within the Middle Rio Grande (MRG) region of New Mexico. This article adds to our understanding of relationships between Pottery Mound, the Western Pueblos, and Mexico through use of biological distance analysis based on dental nonmetric traits. Extensive material and cultural influences, as well as migration events from Western Pueblos to Pottery Mound, have been proposed by several scholars, while others have highlighted parallels to Mexico, especially Paquimé. A total of 1,528 individuals from the U.S. Southwest and Mexico were used to examine relationships between Pottery Mound and these areas. We find no evidence of close biological similarity between Pottery Mound and the Western Pueblos or northern Mexico. Instead, the results indicate biological affinity between Pottery Mound and sites in the MRG region and Mogollon areas. This similarity suggests that although there is evidence for trade between Pottery Mound and other sites in the southwestern United States and Mesoamerica, trade may not have been accompanied by significant gene flow from those areas from which the trade goods originated. It is possible that neighboring regions, such as the Mogollon, served as intermediaries for trade between Pottery Mound and distant regions.