mamenchisaurus dinosaur travels

animal behemoth bird carnivorous claws creature cretaceous dinosaur environment era evolution extinct extinction flight flying gigantic grand herbivore herbivorous hochuanensis illustration image jurassic large lizard mamenchisaurus mesozoic monster nature paleoart picture powerful prehistoric primeval primitive pteranodon pterodactyl pterodactylus pterosaur quadruped reptile sauropod teeth terrible themes titanosaur vertebrate wilderness wildlife wing youngi