In the Late Mississippian period (AD 1400–1541) certain specialized pottery vessels produced in the Lower Mississippi Valley (LMV) were either sculpted or incised with an interesting array of zoomorphic figures. Such zoomorphic imagery is entirely lacking in the abstract designs on Ramey Incised pottery produced at Cahokia during an earlier period. Prominent among these zoomorphic images is a series of winged serpents, although the serpent imagery is not limited to winged creatures.