 Complete the following phrase:  The double-headed eagle has been shown to derive from Central Asian traditions, and spread to the eastern Mediterranean with the Seljuq Turks. Thus, in the late 12th and throughout the 13th century, the eagle was used in northern Syria and Upper Mesopotamia: the Artuqid sultans of Amida used it as their insigne, the coins of the Zengid dynasty sported it, and Saladin and the Seljuq sultan Kayqubad I likewise used it as a decorative motif in their buildings. This usage declined sharply after the Battle of Köse Dağ in 1243, as many Seljuq traditions of pre-Islamic origin were abandoned, including the depiction of animals. the motif continues to appear sporadically as architectural decoration in the 14th century, and in some Ottoman coinage in the 15th century. In addition, the double-headed eagle may have been in use in the Latin Empire established after the 