Turannosaurus rex, species of large predatory theropod dinosaurs that lived during the end of the Cretaceous Period (about 66 million years ago) known from fossils found in the United States and Canada dating to between about 80 million and 66 million ye
Most people assume that the North AmericanTyrannosaurus rex—at 40 feet from head to tail and seven to nine tons—was the biggest carnivorous dinosaur that ever lived.T. rex, however, was equaled or outclassed by not one but two dinosaurs: the South AmericanGiganotosaurus, which weighed abou...
The teeth of the Giganotosaurus were, on the whole, smaller than that of theT-Rex(although the whole Ginanotosaur was larger than the wholeTyrannosaurus) and the teeth more designed for slashing. This might indicate that huge, agile Giganotosaurs would charge in and take slashing bites out ...
T. Rex had very short forelimbs (arms) while the allosaurus had longer arms. Comparison chart Differences — Similarities — Allosaurus versus Tyrannosaurus comparison chart AllosaurusTyrannosaurus Kingdom Animalia Animalia Phylum Chordata Chordata Class Reptilia Reptilia Period Late Jurassic Period (150...
O'Meara, Stephen James