Mesopotamian art featured repetitive motifs, simplified figures, and curled beards in bas-relief sculptures carved into flat surfaces. Some notable examples include the Lamassu bas-relief guardians from 715 BC Assyrian palaces and the 600 BC Gates of Ishtar in Babylon with animal reliefs, which was one of the Ancient Wonders of the World. Common art forms included ritual objects, representations of rulers and states, and personal possessions dating back to statuettes from 2600 BC like the Standard of Ur and a ram caught in a thicket.