A leading reason to consider the Bastarnae as Celtic is that the regions they are documented to have occupied (the northern and eastern slopes of the Carpathians) overlapped to a great extent with the locations of Celtic tribes attested in the northern Carpathians. (The modern name of this region, Galicia, is generally regarded as having a later origin, in either a Slavic or Turkic language. However, some scholars have instead suggested that the name Galicia may derive from its former Celtic inhabitants the Taurisci, Osi, Cotini and Anartes of Slovakia and northern Romania and the Britogalli of the Danube Delta region.) In addition, archaeological cultures which some scholars have linked to the Bastarnae (Poieneşti-Lukashevka and Zarubintsy) display pronounced Celtic affinities. Finally, the arrival of the Bastarnae in the Pontic-Danubian region, which can be dated to 233–216 BC according to two ancient sources, coincides with the latter phase of Celtic migration into the region (400–200 BC).