Coriantumr’s ancestors (the Brother of Jared, etc.) left Mesopotamia at the time of the tower of Babel. Their departure, with the pure Adamic language, is not recorded in the Bible. Genesis does record that the Lord [did] scatter them abroad upon the face of all the earth (Gen 11:9). Josephus is a little more specific about how the Lord scattered the peoples at this time, “they were dispersed abroad, on account of their languages, and went out by colonies everywhere...so that the whole continent was filled with them, both the inland and maritime countries.There were some also who passed over the sea in ships, and inhabited the islands.” (Josephus, Antiquities of the Jews, Book I, Chapter V, italics added)