Apatosaurus excelsus

Definitions of Apatosaurus excelsus
  1. noun
    huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic
    synonyms: apatosaur, apatosaurus, brontosaur, brontosaurus, thunder lizard
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    type of:
    sauropod, sauropod dinosaur
    very large herbivorous dinosaur of the Jurassic and Cretaceous having a small head a long neck and tail and five-toed limbs; largest known land animal
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