Since its discovery in 1962 the multilayered Kulbulak site (Tashkent region, Uzbekistan) has been declared the basic object for reconstruction of cultural and chronological schemes of Paleolithic Age period development in the western part of Central Asia. On the basis of the Middle Paleolithic industries of the site ( materials of 1960–1980 excavations) the separate facies named «Denticulate Mousterian» was identified in the regional Stone Age. This facies is characterized by presence of a large quantity of denticulate and notched tools. During a new stage of excavations of the Kulbulak site (2007–2010, 2013) new results were obtained, which can review the interpretation of the industries preceding the upper Paleolithic. On the basis of geomorphologic, sedimentological and stratigraphic studies it was established that geological layers 3–11 (middle part of stratigraphic sequence) are of a proluvium and mudflow genesis. The results of this research make identification of facies Denticulate Mousterian based on materials of the Kulbulak site questionable and dispute approach to its identification based on materials of Paleolithic sites in the western part of Central Asia.