ankylosaurus and triceratops in the valley at the lake

activity ancient animal ankylosaur ankylosaurid ankylosaurus armored beast big ceratopsian ceratopsidae creature crested cretaceous dangerous dino dinosaur dinosaurs diplodocus drawing envirnoment evolution fauna grass herbivore horn image jungle jurassic landscape megalodon nature paleontologist paleontology predator prehistoric prehistory primitive pteranodon pterodactyl reptile stegosaurus tree trex triceratops tyrannosaurus vertebrate wild wildlife