|  brontosaur 
 
 huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic
 • Syn:
 apatosaur, apatosaurus, brontosaurus, thunder lizard, Apatosaurus excelsus
 • Hypernyms:
 sauropod, sauropod dinosaur
 • Member Holonyms:
 genus Apatosaurus, genus Brontosaurus
 
 
 |  |