List the 4 basic principles of genetics that mendel discovered in his experiments. briefly describe each princeiples.
Results showed T. rex was heavier than previous estimates, which ranged from about 4.5 tons to 6.5 tons, with the Field Museum's Sue skeleton weighing a heaping 9 tons (about 8,164 kilograms). [ Gallery: The World's Biggest Beasts ].
Tyrannosaurus 3D Model. The concept that makes Tyrannosaurus rex so deadly is that it had a huge 5 foot (1.5 metre) long skull that weighed well over 500 lbs (225 kg) in weight and great jaws that could dislocate like a snake to swallow large pieces of meat.