Tyrannosaurus Rex is probably the most recognizable dinosaur around. More than 50 specimens have been identified. Several examples have been identified as juvenile Tyrannosaurus. This has given scientists the ability to document physical changes in T. Rex, like estimating it’s lifespan, and determining how quickly Tyrannosaurus would have grown. The smallest known individual known as the "Jordan theropod” is estimated to have weighed only 66 pounds / 30 kg and was only 2 years old when it died. On the other end, the largest specimen “Sue" weighed over 11,900 pounds / 5,400 kg and was most likely around 28 years old at the time of her death.
|Full Name||Tyrannosaurus Rex|
|Name Means||Tyrant Lizard|
|Period||Late Cretaceous 68 to 66 Million Years Ago|
|Size||40 feet (12 meters) long|
|Weight||7.5 tons / 6.8 metric tonnes|
|Discoverer||Barnum Brown 1902|