American Museum of Natural History - Was Stegosaurus' spiky tail was simply ornamental or used for self-defense? Recent evidence seems to point to the quadruped's ability to fend off predators with its
Is it believed that the dorsal plates and tail spikes of the Stegosaurus were bare bone, or were they covered with skin or keratin? - Quora
![Osteoderm distribution does not significantly influence the center of mass of stegosaurs | dinosaurpalaeo Osteoderm distribution does not significantly influence the center of mass of stegosaurs | dinosaurpalaeo](https://dinosaurpalaeo.files.wordpress.com/2014/03/figure_01.jpg)