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Published online by Cambridge University Press: 02 January 2015
The hippopotamus is a large beast with large teeth—large enough for hippopotamus ivory, then and now, to be a useful alternative to elephant ivory (there are both kinds in the Aegean Bronze Age, as well as the little tusks of wild boar). A newly found cache of hippopotamus ivory at Gao, medieval city of the south Saharan edge, opens a wider place for the material in contact across the great north African desert.