Gorgoneia are first seen in Greek art at the beginning of the 8th century BC. One of the earliest is on a coin found during an archaeological dig at Parium. Other early 8th-century examples were found at Tiryns. There is a similar image from the Knossos palace, dating from the 15th century BC. Marija Gimbutas even argues that "the Gorgon extends back to at least 6000 BC, as a ceramic mask from the Sesklo culture illustrates".