For 10 points name this winged horse of ancient Greek legend.
This figure's brother was the father of the three-headed giant Geryon. Along with his brother Chrysaor, this figure was born when Perseus decapitated Medusa. This mythic figure was also the creator of the Hippocrene fountain on Mount Helicon. Athena gave Bellerophon a golden bridle that allowed him to ride this creature into battle against the chimera. Bellerophon would later be thrown from his back in an attempt to reach the top of Mount Olympus. For 10 points name this winged horse of ancient Greek legend.
This figure's brother was the father of the three-headed giant Geryon.
{Pegasus}