tyrannosaurus rex dinosaur, prehistoric extinct reptile animal, jurassic period, mesozoic era

tyrannosaurus rex dinosaur prehistoric extinct animal jurassic reptile period mesozoic era theropods trex dino laramidia carnivore creature extinction monster gigantic lizard nature discovery cretaceous big desert earth paleontology beast fossil landscape ecosystem discover large wildlife neck tale giant herd eat plants biology evolution primitive ancient wild meteorite herbivore