Stegosaurus (meaning "roof-lizard") was a type of plant-eating ............... which lived in what is now western North America. Stegosaurus lived in the Upper ................ period around 155 to 145 million years ago. It is one of the most easily recognized dinosaurs, with its distinctive double row of kite-shaped .............. on its back, and the long .............. on its tail. The armor was necessary as it lived with such meat-eating ............. Jurassic plates spikes carnivores herbivore