Abstract
It is the purpose of this article to analyze and discuss the flint industries characterized by the production of trapezes from blades that as a rule were broad and regular, industries which appeared in many parts of the continent during the closing phase of the local mesolithic. After a word on classification (fig. 1) the evidence for the occurrence of these industries will be summarized on a geographical basis (fig. 2). Finally, some discussion will be offered as to their significance, above all in relation to the spread of neolithic culture.

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