The predators eyeing the Tuojiangosaur in this image are cautious, and for good reason. While this member of the stegosaur was undoubtedly delicious, it evolved a badass pair of shoulder spikes to fend off attackers. Unlike its cousin stegosaurs, the Tuojiangosaurus made it virtually impossible for predators to get in a bite at its precious neck without skewering themselves. Artwork by Alexandernevsky.
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