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apatosaurus

[ ə-păt′ə-sôrəs ]
apatosaur (ə-pătə-sôr′)
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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.
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Words nearby apatosaurus

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

How to use apatosaurus in a sentence

  • This was about thirty feet long, and is known as Apatosaurus grandis.

    Extinct Monsters|H. N. Hutchinson
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