|any herbivorous quadrupedal saurischian dinosaur of the suborder Sauropoda, of Jurassic and Cretaceous times, including the brontosaurus, diplodocus, and titanosaurs. They had small heads and long necks and tails and were partly amphibious|
|[C19: from New Latin sauropoda, from Greek sauros lizard + pous foot]|
|sauropod (sôr'ə-pŏd') Pronunciation Key
One of the two types of saurischian dinosaurs, widespread during the Jurassic and Cretaceous Periods. Sauropods were plant-eaters and often grew to tremendous size, having a stout body with thick legs, long slender necks with a small head, and long tails. Sauropods included the apatosaurus (brontosaurus) and brachiosaurus. Compare theropod.