Tyrannosaurus rex is undoubtedly one of the most famous dinosaurs. Whether it was the largest amongst the meat-eating theropods, however, is questionable and often part of intense debate. Based on the ...

Tyrannosaurus rex may have taken far longer to grow up than scientists once thought. By analyzing growth rings in fossilized leg bones from 17 tyrannosaur specimens and using new statistical methods, ...

Paleontologists with the Burke Museum of Natural History and Culture and the University of Washington have discovered a Tyrannosaurus rex, including a very complete skull in Montana. The find — which ...