The only mortal member of the Gorgons, a trio of monstrous daughters of Phorcys and Ceto who had brass hands, fangs, and venomous snakes for hair; the other two were Stheno and Euryale. Many early sources state that Medusa was born a monster, though Ovid's Metamorphoses state that Medusa was a beautiful woman until she was raped by Poseidon in Athena's temple and cursed by the goddess. Gazing directly into Medusa's eyes resulted in the onlooker being turned into stone. She was beheaded by the hero Perseus, who was sent to retrieve her head by the tyrant Polydectes, whom Perseus then killed with the head. Perseus gave the head of Medusa to Athena, who placed it on her shield, the aegis. When Medusa was beheaded, the winged horse Pegasus and the giant warrior Chrysaor emerged, her sons by Poseidon. According to Ovid, Medusa's head was also used to petrify the Titan Atlas.