An example of a type of burin diagnostic of the archaeological stratum where they are found is the "'" Noailles " burin "', a small multiple burin characteristic of the Upper Paleolithic cultural stage called the Gravettian, ca . 28 23, 000 BC; these flake tools have been restruck and refined to give several chisellike edges and a blunt, grippable rear edge.
22.
Whereas this term is often used for any unifacially flaked tool that defies classification, most lithic analysts maintain that the only true scrapers are defined on the base of use-wear, and are usually worked at their distal ends i . e ., " end scrapers . " Other scrapers include the so-called " side scrapers . " Most scrapers are either oval or blade-like in shape.
