Different models of stone-working technology in the Upper Palaeolithic
are tested by examining an assemblage from Haua Fteah, on the Libyan
coast of north Africa. Evidence that some scrapers have been reworked
into burins, while some burins were modified to form scrapers, show ho
w this typically Upper Palaeolithic industry contains morphological tr
ansformations between types. This evidence is consistent with a techno
logical continuity from the Middle Palaeolithic.