Stegosaurus

A Stegosaurus was a dinosaur indigenous to planet Earth millions of years ago. Stegosaurs were noted for being herbivorous and for having spiked tails.

In 2152, Charles Tucker III mentioned to Malcolm Reed that he always wanted to meet a stegosaurus. 

In the year 2268 of an alternate timeline Earth, Doctor Leonard McCoy conjectured that a large, buffalo-sized animal that was phaser stunned by Captain Kirk, may have evolved from stegosaurs due to its spiked tail.