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Using microscopy and spectroscopy, the authors were able to distinguish ivories from extinct Pleistocene elephants, Asian elephants and, mostly, from African elephants of the savannah type. This all speaks of a lively ocean trade in the first half of the third millennium BC, between the Iberian Peninsula and the north-west of Africa and perhaps deeper still into the continent.<\/jats:p>","DOI":"10.1017\/s0003598x00099294","type":"journal-article","created":{"date-parts":[[2015,1,19]],"date-time":"2015-01-19T14:49:58Z","timestamp":1421678998000},"page":"983-997","source":"Crossref","is-referenced-by-count":56,"title":["Sourcing African ivory in Chalcolithic Portugal"],"prefix":"10.1017","volume":"83","author":[{"given":"Thomas\u00a0X.","family":"Schuhmacher","sequence":"first","affiliation":[]},{"given":"Jo\u00e3o\u00a0Lu\u00eds","family":"Cardoso","sequence":"additional","affiliation":[]},{"given":"Arun","family":"Banerjee","sequence":"additional","affiliation":[]}],"member":"56","published-online":{"date-parts":[[2015,1,2]]},"reference":[{"key":"S0003598X00099294_ref006","volume-title":"Fiches typologiques de l'industrie osseuse pr\u00e9historique, Cahier IV: Objets de parure","author":"Camps-Fabrer","year":"1991"},{"key":"S0003598X00099294_ref028","first-page":"19","article-title":"Origen y significado del marfil durante el Horizonte Campaniforme y los inicios de la Edad del Bronce en el Pa\u00eds Valenciano","volume":"29","author":"Pascual Benito","year":"1995","journal-title":"Saguntum"},{"key":"S0003598X00099294_ref034","volume-title":"The elephant in the Greek and Roman World","author":"Scullard","year":"1974"},{"key":"S0003598X00099294_ref036","volume-title":"Questions de chronologie et d'\u00e9thnographie iberiques","author":"Siret","year":"1913"},{"key":"S0003598X00099294_ref022","first-page":"221","volume-title":"L'\u00e2ge du cuivre europ\u00e9en. 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