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New DNA analysis of ancient Pueblo remains suggests that the complex society that once existed at Chaco Canyon in the southwestern United States traced family relationships through the mother’s line, confirming long-held contentions of modern Pueblos that the matrilineal system is centuries-old. Studies of the genomes of 9 individuals found buried along with a trove of ceremonial offerings at Pueblo Bonito reveal a matrilineal dynasty that lasted for about 330 years. [Full Text]