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Ankylosauria
The two families of Ankylosauria (ang-kile-uh-SAWR-ih-ah) are the Ankylosaurids
and the Nodosaurids. These animals were the armored tanks of the Age of
Dinosaurs, covered from head to tail with patterns of bony plates.
Euoplocephalus, an Ankylosaurid, even had bony eyelids, a characteristic
also found in Nodosaurids. They were quadrupedal, with short, powerful
legs. Ankylosaurs ranged from six to thirty feet (1.8 - 9.0 meters) in
length.
Their bodies were slung low to the ground, and they may have crouched when
attacked, in order to expose nothing but armor plate to a predator. Ankylosaurids
also had tails that ended in bony clubs, with which they could have actively
defended themselves. As fearsome as they may have appeared, ankylosaurs
were herbivores.
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