OAXACA, MEXICO—A 1,200-year-old colorful effigy vessel recovered from a mortuary temple at Mexico’s Atzompa Archaeological Zone may depict a person known as Tremor 8, according to new information released by the National Institute of Anthropology and History. The vessel was found largely intact and was painted red, brown, and grayish green. The human figure had been decorated with an elaborate headdress, feathers, tassels, a necklace, and earrings.