Sawropoda or Sauropoda: How To spell?

The word Sawropoda is misspelled against Sauropoda, a noun meaning "An extinct order of herbivorous dinosaurs having the feet of a saurian type, instead of birdlike, as they are in many dinosaurs. It includes the largest known land animals, belonging to Brontosaurus, Camarasaurus, and allied genera. See Illustration in Appendix."