What sprang out of medusa after her head was cut off?

Athena, a goddess did this to her. When Medusa was a very beautiful girl, she asked to visit the south. Athena did not let her. So then Medusa therantened her that she would dare say she was jealous of her beauty. Then Athens got mad and cursed with ugliness. She was so ugly whoever looks her in the eye will turn to stone.