Chip Clark/Smithsonian National Museum of Natural History
EOL staff
Reconstructed skeleton of Tyrannosaurus rex.Tyrannosaurus rex was a carnivorous theropod dinosaur that walked on strong hind limbs. The brains of T. rex were small relative to the brains of large modern mammals.
Chip Clark/Smithsonian National Museum of Natural History
EOL staff
Tyrannosaurus rex ranks among the largest meat-eating dinosaurs known.Tyrannosaurus rex was an enormous dinosaur. It ranks among the very largest meat-eating dinosaurs known and lived around 66 million years ago, during the Cretaceous Period.