Analysis of oxygen isotopes in fossil teeth from red deer near the Adriatic Sea suggest that they migrated seasonally, which may have driven the movements of the Paleolithic hunter-gatherers that ate them, according a study published June 8, 2016 in the open-access journal PLOS ONE by Suzanne Pilaar Birch from University of Georgia, USA, and colleagues.
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Fossil teeth suggest prehistoric red deer in the Adriatic migrated seasonally