“…During the Middle Pleistocene, simultaneously, along with an increase of archaeological evidence, a persistence of the opportunistic debitage can be attested throughout Europe. These assemblages are often associated with the first bifacial complexes (Barsky et al, 2013;Bourguignon et al, 2016;García-Medrano et al, 2015;Martínez & Garcia Garriga, 2016;Moncel et al, 2013Moncel et al, , 2014Preece & Parfitt, 2012;Santagata, 2016) or to small-medium flake ones (Aureli et al, 2016;Despriée et al, 2010;Gallotti & Peretto, 2015;Grimaldi et al, 2020;Muttillo et al, 2021;Ollé et al, 2013;Parfitt et al, 2008;Preece & Parfitt, 2012;Rocca et al, 2016), although terminological and methodological issues endure. The reduction sequences always comprise strong flexibility and versatility, translating in a constant adaptation to the raw material's morphology and optimisation of flake production.…”