Saurischia (ə {respell|saw|RIS|kee-ə}, from the Greek sauros (σαυρος) meaning `lizard` and ischion (ισχιον) meaning `hip joint`) is one of the two basic divisions of dinosaurs. In 1888, Harry Seeley classified dinosaurs into two orders, based on their hip structure, though today most paleontologists classify Saurischia as an unra... Found on http://en.wikipedia.org/wiki/Saurischia