diplodocus dinosaur shoreline

age america animal ankylosaur armor armored bird carnivore coastline creature cretaceous dinosaur diplodocid diplodocus epoch era evolution extinct extinction flight flying formation gargoyleosaurus genus herbivore hunter illustration image jurassic lizard longiceps longus mesozoic morrison nature north organism paleontology parkpinorum period picture plates predator prehistoric primeval primitive pteranodon pterodactyl pterodactyloid pterodactylus pterosaur quadruped reptile sauropod shoreline species spikes teeth themes vertebrate waterfall wild wildlife wing wyoming