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