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Nature 228, 1062-1065 (12 December 1970) | doi:10.1038/2281062a0; Received 22 July 1970

Neolithic Trade Routes re-aligned by Oxygen Isotope Analyses

NICHOLAS SHACKLETON* & COLIN RENFREW

  1. *Sub-department of Quaternary Research, University of Cambridge
  2. Department of Ancient History, University of Sheffield
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Oxygen isotope analyses of Spondylus shells from neolithic sites suggest that the source for the shells used as ornaments in the Balkans and central Europe during the fourth millennium BC was the Aegean and not the Black Sea. The trade in Spondylus may have taken the form of an exchange of gifts.