Despite it being very faint, Capricornus has one of the oldest mythological associations. It has consistently been represented as a cross of a goat and a fish since the Middle Bronze Age. The earliest picture of Capricornus is on a cylinder-seal dating c. 21st century BCE. From the mid second Millennium it became a popular motif on boundary stones. It was explicitly recorded in the Babylonian star catalogues as "The Goat-Fish" before 1000 BC. The constellation was a symbol of Ea and in the Early Bronze Age marked the winter solstice.