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Scientific name: Tyrannosaurus rex (From the Greek and Latin for "tyrant lizard king")
Age: Late Cretaceous Period 67 million years
Range: Western North America
Discovered: August 12, 1990, on the Cheyenne River Sioux Indian Reservation near Faith, South Dakota, by fossil hunter Sue Hendrickson
Length: 12.8 meters
Height at hips: 4.0 meters
Estimated live weight: 6.4 metric tons
Weight of skull: 272 kg
Length of skull: 1.5 meters
Size of brain cavity: Just big enough to hold 2 litres of milk
Number of teeth: 58
Length of teeth: 19.05 to 30.5 centimeters
Diet: Meat