Ключевые слова: allosaurus, ancient, ancient creatures, ancient life, ancient world, apex, bones, carnivore, carnosaur, claw, claws, cretaceous, dinosaur, dinosaur era, dinosaur fossil, ecosystem, enormous, era, extinct, fearsome, ferocious, fierce, fossil, habitat, herbivore, hunting, jaws, jurassic, mesozoic, paleontologist, paleontology, predator, predatory, prehistoric, prehistoric times, reptile, roamed, roaming, sauropod, skeleton, teeth, teeth structure, territorial, theropod, tyrannosaur,