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apatosaurus in Science
apatosaurus (ə-pāt'ə-sôr'əs) or apatosaur
A very large sauropod dinosaur of the genus Apatosaurus (or Brontosaurus) of the late Jurassic Period. Apatosaurs had a long neck and tail and a relatively small head. See Note at brontosaurus.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Historical Examples
  • This was about thirty feet long, and is known as apatosaurus grandis.

    Extinct Monsters H. N. Hutchinson

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