Seleucid Empire From Wikipedia, the free encyclopedia Jump to navigationJump to search Seleucid Empire Βασιλεία τῶν Σελευκιδῶν 312 BC–63 BC Tetradrachm of Seleucus I - the horned horse, the elephant and the anchor all served as symbols of the Seleucid monarchy.[1][2] The empire at its greatest extent prior to the Seleucid–Mauryan war[disputed – discuss] Capital Seleucia (305–240 BC) Antioch (240..