Late Cretaceous (65 Million Years Ago)
Hell Creek Formation, Montana
Natural and unrestored specimen with serrations and enamel. Surface find- naturally sunbleached
Tyrannosaurus is one of the most iconic dinosaurs and is known from numerous specimens, some of which have individually acquired notability due to their scientific significance and media coverage.
Tyrannosaurus is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex, often called T. rex or colloquially T-Rex, is one of the most well-represented of the large theropods. Tyrannosaurus lived throughout what is now western North America, on what was then an island continent known as Laramidia.
What did Tyrannosaurus rex eat? The obvious answer is “Anything it wanted,” but paleontologists have uncovered some surprises in the actual mealtime habits of the Cretaceous carnivore. The latest find is a set of 66-million-year-old scrapes on a Tyrannosaurus limb bone found in Wyoming, to be presented at the annual Geological Society of America meeting in Baltimore, Maryland on Monday. These scratches were clearly made by a large predator with serrated teeth, and study leader Matthew McLain says that T. rex itself was the only carnivore around at the time capable of creating such damage.
Researchers estimated that an adult T. rex could bite with a force up to about 57,000 newtons (12,800 pounds). (Juveniles didn’t even come close, with a wimpy bite of about 4,000 newtons, or 880 pounds.) While not the strongest bite of all time, it appears to have been plenty to dispatch an Edmontosaurus or Triceratops caught unawares.