 It is written quite differently from Achaemenid Aramaic; there is an emphasis on writing as words are pronounced rather than using etymological forms.Babylonian Targumic is the later post-Achaemenid dialect found in the Targum Onqelos and Targum Jonathan, the "official" targums.The original, Hasmonaean targums had reached Babylon sometime in the 2nd or 3rd century CE.