scutellosaurus dinosaur side profile

animal arizona armor armored background biped bipedal built creature dinosaur dwelling era evolution external extinct extinction genus ground herbivore herbivorous illustration image isolated jurassic lawleri lighly lightly little lizard long nature organism ornithischian osteoderms over paleontology period picture plates prehistoric primeval primitive reptile scutellosaurus shielded small species tail teeth themes thyreophora thyreophoran usa vertebrate white wild wildlife