Noun
The apatosaurus or brontosaurus.
Usage- Informal
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More examples (1)
The footprints have already settled one old argument about the Thunder Lizard's habits. Scientists had once argued that the animal's legs could not have supported its tremendous bulk on land and that it was only capable of swimming.
Noun
huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic
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