Note 16 — Chapter II · Bactrians and Parthians
Reading edition
In B.C. 327 Seleucus I. had been placed in charge of Syria and the East, and of Babylon—to which, with the aid of Antigonus, he added Susiana. In 316, owing to a quarrel with Antigonus, he fled to Egypt, but in 312 he re-entered Babylon. The era of the Seleucidæ dates from this event. Seleucus extended his dominions as far as the Oxus and the Indus. Not till 306 did he officially adopt the title of king. Gutschmid, op. cit. p. 24.