Possible traces of the eastward spread of the Micoquian in Central Eurasia: asymmetrical backed bifaces from Semizbugu

The paper describes and analyzes two bifacially worked tools from the site of Semizbugu on the northern shore of Lake Balkhash (Kazakhstan) which find clear morphological and technological (operation sequence) analogies in the category of Keilmessers. These and similar objects from other archaeological sites in the plain zone of Kazakhstan are of particular interest in the light of a recent hypothesis about the eastward