The “dueling dinosaur” fossil still leaves more questions than answers as scientists now attempt to determine their causes of ...

Two paleontologists think they have settled a long-standing debate as to whether certain fossils from the very end of the ...

Nano Tyrannus lancensis was first identified in the 1940s but later largely dismissed by the paleontological community as ...

T. rex's story has been turned on its head by a new discovery about one of the world's most famous fossil finds. One of the ...

At the twilight of the age of dinosaurs, an agile and vicious predator named Nanotyrannus prowled western North America, resembling a smaller version of Tyrannosaurus - about a tenth the body mass - ...

The debate over Nanotyrannus’ identity is finally over. A remarkably preserved fossil proves it was a mature species, not a teenage T. rex. This discovery rewrites how scientists understand ...

What if everything we know about T. rex growth is wrong? A complete tyrannosaur skeleton has just ended one of paleontology’s longest-running debates – whether Nanotyrannus is a distinct species, or ...