 On the upper reaches of the Tigris, East Mesopotamian Aramaic flourished, with evidence from Hatra, Assur and the Tur Abdin.Tatian, the author of the gospel harmony known as the "Diatessaron", came from the Seleucid Empire and perhaps wrote his work (172 CE) in East Mesopotamian rather than Syriac or Greek.In Babylonia, the regional dialect was used by the Jewish community, Jewish Old Babylonian ("c." 70 CE).