Scientists have identified a previously unknown 86 million-year-old dinosaur species that fills an early gap in the fossil record of tyrannosaurs, revealing how they evolved to become massive apex ...

Deep in the deserts of ancient Mongolia, Tarbosaurus ruled as the apex predator of the Late Cretaceous. Closely related to Tyrannosaurus rex, this massive carnivore shared the same bone-crushing bite ...

If Tyrannosaurus rex is too mainstream, discerning 10-year-olds may now have a new name to spout when asked their favorite dinosaur – Tyrannosaurus mcraeensis. The newly identified species appears to ...

ALBUQUERQUE, N.M. (AP) — Researchers have identified a new subspecies of tyrannosaur thought to be an older and more primitive relative of the Tyrannosaurus rex. A team of paleontologists and ...

Long before Tyrannosaurus rex stalked the planet, a Dragon Prince reigned supreme. Paleontologists have discovered a new 'missing link' species that cleared the way for the iconic giant carnivores.

While Tarbosaurus, an ancestor of T. rex, clocked in at between 3,000 and 6,000 kilograms (6,613 pounds and 13,227 pounds), the fleet-footed Khankhuuluu mongoliensis likely weighed only around 750 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Scientists have ...