tenontosaurus attack

america animal animals apex behemoth biped carnivore carnivorous creature cretaceous deinonychus dinosaur environment era evolution extinct extinction gigantic grand herbivore herbivorous hunting iguanodont illustration image large lizard mesozoic monster nature north organism ornithopod paleoart picture powerful predator prehistoric primeval primitive quadruped raptor reptile tenontosaurus themes theropod tilletti vertebrate wilderness wildlife world