A new genetic research study has demonstrated the existence of a distinct local community of Stone Age farmers that disappeared and were replaced by immigrant groups approximately 5000 years ago near the Paris Basin, specifically at Bury, France. Based on DNA data retrieved from the teeth of 132 individuals buried in a megalithic tomb in Bury, this research confirmed that two distinct genetic populations existed and were separated by an era of abandonment. This 'Neolithic decline' represents a dramatic reduction in the northwestern European population due to a catastrophic and rapid decline, possibly caused by a combination of social, environmental, and disease-related factors. These findings likely provide the best example of an abrupt end to the Neolithic era of monumental, large-scale construction due to this transformative demographic shift.
DNA Analysis Shows Migration Replaced the Earlier Population Near Paris
According to the University of Gothenburg, the genetic data analysis of 132 individual remains indicates a marked, distinct break in ancestry between burials before 3000 BC and those after this time. Specifically, individuals from the first period, before 3000 BC, appeared genetically similar to populations from northern France and Germany. By comparison, individuals from the second group were genetically similar to those in southern France and the Iberian Peninsula, indicating a dramatic population turnover. This suggests that a community in the Paris area disappeared as a result of human migration from regions to the south moving northward.
The Factors Behind Lost People
According to the University of Copenhagen, the research team employed state-of-the-art DNA approaches to identify human remains with evidence of ancient pathogens. They found two strains of pathogen: Yersinia pestis (the bacteria responsible for plague) and Borrelia recurrentis (the organism that causes louse-borne relapsing fever). However, the researchers do not believe these infections contributed solely to the demise of individual population members. Instead, they noted significant elevations in mortality, particularly among younger members, indicative of an extended period of crisis during which the population endured tremendous stress, possibly from famine or warfare, before being replaced by a new population.
Evidence of New Social Hierarchies in Stone Age Tombs
Beyond the genetic replacement, the researchers observed a fundamental change in how these communities organized themselves. According to the study published by the University of Copenhagen, during the earlier phase, the tomb was used by tightly knit, multi-generational family groups. In contrast, the later phase showed a shift toward more selective burials dominated by a single male lineage. This transition suggests that the population change was not merely a migration of people, but a complete reorganization of social and funerary practices that coincided with the broader, Europe-wide end of megalithic tomb construction.
