The analysis of human teeth recovered during archaeological excavations has remained a standard means of investigating ancient migration patterns for the last five decades. In fact, this tried-and-true methodology has produced some important new results that shed light on the Native American migration from Asia to the Americas at least 16,000 years ago.
According to newly published research appearing in the American Journal of Biological Anthropology, those ancestors left eastern Asia in one gigantic mass movement of people. This Native American migration created a genetic (and dental) unity between different Native American groups that is a reflection of their common roots in that single mass migration.
Dental Anthropology Unlocks Secrets of Native American Migration
Amazingly, dental anthropologists have been able to discover many details about human migration from studying variations in the shapes of human teeth. The teeth in question often originate from individuals who lived in a bygone era, their sole legacy now confined to skeletal remnants left behind to be analyzed by scientists.
But dental anthropologists also study the teeth of modern humans, which helps them determine how teeth have evolved over the course of thousands of years. In the course of their work, these professionals make comparisons between modern and ancient teeth in order to detect ancestral connections between the old teeth and the new (and naturally between the people who possessed those teeth).
For the purposes of this latest analysis, an international team of dental anthropologists from Europe and the United States obtained access to a web-based application/database known as rASUDAS, which allows researchers to identify the ancestry of an unidentified person based on their tooth crown and root traits.
While this forensic application can be used to identify commonalities between the teeth of ancient and modern individuals, and therefore identify ancestry of the modern person, in this case it was used to identify the ancestry of prehistoric people whose teeth had been recovered from archaeological sites in different regions of the world.
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