Painted human mandibles that may have been worn like necklace pendants have been discovered at a ceremonial site in Mexico that dates back around 1,300 years. In the same ceremonial area, numerous whistles and figurines were also discovered. Made out of ceramic, these objects had been smashed into thousands of fragments, not a single example found intact. The whistles may have made owl-like sounds, archaeologists said. Some of the figurines were sculpted images of Xipe Totec, a Mesoamerican god associated with human sacrifice and agricultural activity. The god was often shown with human bones draped around his neck.