Europe’s prehistory oversaw dynamic and complex interactions of diverse societies, hitherto unexplored at detailed regional scales. Studying 271 human genomes dated ~4900 to 1600 BCE from the European heartland, Bohemia, we reveal unprecedented genetic changes and social processes. Major migrations preceded the arrival of “steppe” ancestry, and at ~2800 BCE, three genetically and culturally differentiated groups coexisted. Corded Ware appeared by 2900 BCE, were initially genetically diverse, did not derive all steppe ancestry from known Yamnaya, and assimilated females of diverse backgrounds. Both Corded Ware and Bell Beaker groups underwent dynamic changes, involving sharp reductions and complete replacements of Y-chromosomal diversity at ~2600 and ~2400 BCE, respectively, the latter accompanied by increased Neolithic-like ancestry. The Bronze Age saw new social organization emerge amid a ≥40% population turnover.
The subject of the article is the “group” Unětice culture cemetery from the Early Bronze Age investigated in 2014 in Lovosice (Litoměřice district, northwest Bohemia). The cemetery’s dating to 2021–1751 BC corresponds to the mature stage of the Unětice culture in other parts of Bohemia (Moucha’s preclassical and classical stages). The cemetery is characterised by stone and apparently even wooden structures, multiple burials and the exclusive presence of miniature vessels. The population was composed primarily of old adults with the corresponding degenerative productive changes; only two non-adults were determined. Epigenetic marks on the skeletons testifying to a certain degree of kinship between the buried individuals were documented at the group cemetery and outside of it. New excavations have provided more detailed information on the spatial structure of burial grounds which, in addition to large cemeteries (of the Liběšovice, Březno near Louny, and Velke Žernoseky type), are composed of cemeteries with 10–20 graves, small groups of graves and solitary graves. These are also frequently accompanied by contemporary settlements located either close to the cemeteries or, as in the case of Lovosice, in the middle of the burial grounds. The spatial distribution of exogenous artefacts (amber beads, gold ornaments, silicite daggers) points to the possibility of the existence of an established network of long-distance routes in northwest Bohemia in the Early Bronze Age. One of the possible nodal points connected to the long-distance exchange system could have been located in the lower Ohře River region. This is documented, among other things, by the concentration of burial grounds with exceptional finds, settlements with evidence of metallurgy and the largest Bohemian hoards of ingots concentrated in the geographically defined microregion of Lovosice.
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