Tyrannosaurus Rex
Without a doubt, the most famous species of dinosaur is Tyrannosaurus rex. First discovered by Barnum Brown in 1902, this immense meat-eating dinosaur soon captured the public imagination. However, even though we have been studying it for over 100 years, there are still plenty of things we don’t know about Tyrannosaurus rex.
Was he the king?
Until recently, Tyrannosaurus rex was the undisputed king of dinosaurs. It was thought to be bigger and meaner than any other dinosaur. But in the 1990s, two discoveries threatened to topple his crown.
Carcharodontosaurus, discovered in Morocco, and Giganotosaurus, from Argentina, (see pages 42 and 74), might actually be bigger than Tyrannosaurus rex!
Little arms
The question which has been puzzling palaeontologists longer than any other is what are those tiny frontarms for? They don’t reach the mouth of Tyrannosaurus, and the two claws at the end make them pretty useless for gripping. Compared to the dinosaur’s powerful legs and jaws, the arms look feeble.
They have to be there for a reason - we just don’t know what… yet.
The banana bites back
The mouth of Tyrannosaurus rex is filled with over 60 razor-sharp teeth. They are as long as a banana and are curved, too, bending backwards into the dinosaur’s mouth. This odd shape means that when Tyrannosaurus bites into its prey, it is even harder for the unfortunate creature to escape. Tyrannosaurus also has extremely powerful jaw muscles - strong enough to break even the thickest bones of its prey.
Hunter or scavenger?
One of the great debates in the dinosaur world is whether Tyrannosaurus rex is the ferocious predator we always imagined it to be or a sneaky scavenger looking for dead animals to eat. People who believe it is a scavenger point out that tyrannosaurs probably aren’t fast enough to catch most dinosaurs. The idea that Tyrannosaurus is a hunter comes from its strong skull bones and sturdy build - exactly what the dinosaur needs to attack other animals.
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