A. L. Katona (2000) places the beginning of the migration of the Proto-Greek speakers from Ukraine towards the south ca. 2400-2300 BCE. Their proposed route of migration passed through Romania and the eastern Balkans to the Evros river valley from where their main body moved west. As such Katona as well as M.V Sakellariou agree that the main body of Greek speakers settled in a region that included southwestern Illyria, Epirus, northwestern Thessaly and western Macedonia. Older theories like those of Vladimir I. Georgiev placed Proto-Greek in northwestern Greece and adjacent areas (approximately up to Aulon river to the north including Paravaia, Tymphaia, Athamania, Dolopia, Amphilochia, and Acarnania as well as west and north Thessaly (Histiaeotis, Perrhaibia, Tripolis) and Pieria in Macedonia. during the Late Neolithic period . However, the dating of proto-Greek in Bronze Age Greece is compatible with the inherited lexicon from the common Proto-Indo-European language which excludes any possibility of it being present in Neolithic Greece.