daspletosaurus, ,

age american animalia asian bipedals calcium carnivorous chordata coelurosaurian cretaceous daspletosaurus dilong dimorphism dinosaur drawing eaters extinct fossils graphic heterodonty history illustration jurassic king lizard meat natural north paleontology paradoxus period predators reptalia rex saurischia showing soft tarbosaurus the thermoregulation tissues tyrannosaurids tyrannosaurini tyrant