|Common Name||T-Rex or T. Rex|
|Range||North america ( Canada, U.S.A, and Mexico)|
Discovery and Naming
They were large with small but strong two fingered arms, equipped with sharp & sickle-shaped claws. Males may have used there arms to hold on to females during mating. Is always been assumed that tyrannosaurs were scaly skinned, how ever the discovery of yutyrannus which had feathers suggests that t-rexes may have had feathers too. But recent studies show that t-rexes were indeed scaly skinned & there skins were similar to those of crocodilians. But they may have been mostly scaly skinned with hair-like feathers covering parts of the body. Most t-rexes grow 12 meters long but some would have reached 13 meters in length. A t-rex’s skull is huge & it’s snout & lower jaw were very deep. The whole mouth was massive and contained 60 serrated teeth, all them were different sizes with some up 20cm long. A tyrannosaur’s body was heavily built & it’s cavity was wide, to improve its mobility some of it’s vertebrae had holes that can help reduce weight to the animal. The hind legs of a t-rex were large & muscular which were connected to the body via a lizard-hip arrangement, the size of the legs would have gave the dinosaur an excellent pushing power. But due to it’s size & small strides it couldn’t have run too fast ( compared to other theropod-type Dinosaurs). The tail of a t-rex was used to balance is body horizontally & essential for chasing down prey.
They were carnivorous like other tyrannosauroids
A tyrannosaur could live around 20-38 years old.
Classification and Evolution
- Tyrannosaurus has the strongest bite force of any known dinosaur.
- It is probably the biggest meat eating dinosaur in North America.
- It had a very close relative in Asia, Tarbosaurus.