Stegosaurus
The Stegosaurus was an Earth dinosaur that lived in the Jurassic period. 

In 2152, Commander Charles Tucker III mentioned to Lieutenant Malcolm Reed that he always wanted to meet a Stegosaurus, whereupon Reed stated that it would probably make a quick meal out of the commander. Nonetheless, this would have been impossible since, as Tucker corrected the lieutenant, Stegosaurus was a herbivore. ()

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Earth animals