(CN) — A fossil long at the center of one of paleontology’s fiercest debates has finally given up its secret, and it’s rewriting what scientists know about Tyrannosaurus rex. Researchers studying the ...

Two paleontologists think they have settled a long-standing debate as to whether certain fossils from the very end of the Cretaceous represent a distinct species of small tyrannosaur, or juvenileT.

A case of mistaken identity seemingly finally settled this week could shake up vast swathes of what we thought we knew about the most ferocious of dinosaurs—Tyrannosaurus rex. For years, ...