Zodiac constellations can be traced even further back, to Bronze Age (First Babylonian dynasty) sources, including Gemini "The Twins", from MAŠ.TAB.BA.GAL.GAL "The Great Twins", and Cancer "The Crab", from AL.LUL "The Crayfish", among others. Around the end of the 5th century BC, Babylonian astronomers divided the ecliptic into twelve equal "signs", by analogy to twelve schematic months of thirty days each. Each sign contained thirty degrees of celestial longitude, thus creating the first known celestial coordinate system. Unlike modern astronomers, who place the beginning of the sign of Aries at the place of the Sun at the vernal equinox; Babylonian astronomers
The Fisher-Girl and the Crab like being married to a crab. She sneaked off when the parents and crab were asleep, but the crab sneaked ahead of her. He asked a banyan tree whose it was; it said it was his; he ordered it to fall down. He took out a human shape from inside it and put it on, putting his crab shape in the tree. The girl met him at a dance and gave him her ornaments. He went back before her and took on his crab shape again, and gave her her ornaments, which frightened her. She went to sneak out again