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Ancient Burials Show Traces of Blood Feuds

Funerals in the Sonoran Desert thousands of years ago were similar to what they are today. Bodies of the deceased were buried respectfully, while families and mourners followed certain customs to honor lives lost. At least, most of the time.

In some cases, however, the dead received far less reverential treatment. Instead, bodies were tossed haphazardly, headfirst, into their eternal resting place, sometimes sustaining post-mortem injuries on top of an often already violent death.

These atypical burials are of interest to University of Arizona bioarchaeologist James Watson, whose study of ancient graves is providing new insight into the social and biological factors that might have motivated violent killings and statement-making burials in the Southwest’s Early Agricultural Period, and how some of the same factors may still be relevant today.

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Bodies buried by family members were arranged in a flexed position on their side (left), while in atypical burials, bodies were left in more awkward positions (right). CREDIT: Illustration by Caitlin McPherson

Watson’s new research, which analyzed a series of atypical burial sites in the southwestern United States and northwestern Mexico between 2100 B.C. and A.D. 50, is published in the journal Current Anthropology. It was co-authored by UA anthropology doctoral student Danielle O. Phelps.

The burials Watson analyzed showed evidence of a violent end; skeletal remains often included broken bones or projectile points indicating a shooting death. Yet the position of the bodies in their graves was the most telling. Awkwardly splayed or deposited in the ground headfirst, they clearly were not given customary burial treatment, in which they would have been arranged in a flexed position on their sides. The burials also lacked other standard funerary features of the time, which would have been present had the bodies been interred by family members.

“These people were buried very differently than the rest of the community, and we’re trying to understand why that is,” said Watson, UA associate professor of anthropology and associate director and associate curator at the Arizona State Museum. “We’re arguing that the way they were tossed into these pits is a form of continued desecration of the body. It’s moving from violence on the living individual, through to the process of death, to violence on the corpse.”

A common theory in the geographical area where Watson works is that the bodies belong to those accused of witchcraft. Yet, given that the corpses were not dismembered in the way suspected witches’ historically were, Watson offers an alternative explanation.

 

At the root of that violence may be a desire to win prestige, which in turn has important biological implications, even though the perpetrator of violence may not be consciously thinking about those implications, Watson said.

“Prestige has a potential to confer biological benefits, in the sense that you can gain access to power and wealth, including wives, and have more offspring, so there is a level of biological fitness there,” he said.

But why the brutal handling of bodies after death? Watson uses evolutionary biology’s “costly signaling theory” to explain what might be behind the ruthless post-mortem treatment.

Watson suggests that violent killings followed by disrespectful burials similarly send a strong signal — one asserting power and dominance. This signal has the potential benefit of attracting prestige, and the wives and children that come with it, but it also comes with significant risk of retaliation by the victim’s family.

 

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