I couldn't let my ZBrush skills rust from prolonged disuse, so here's a simple Stegosaurus I doodled with it. Most of the time this dinosaur is portrayed with alternating rows of plates rather the symmetrical double row I went with, but I recently read somewhere that one species of Stegosaurus (S. ungulatus) actually did have at least one symmetrical pair of plates, so maybe this isn't a real inaccuracy on my part.