A new look at the "Dueling Dinosaurs" fossil reveals that Tyrannosaurus rex was not the only tyrannosaur roaming the land.

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

A provocative study published earlier this year proposed that the world's best-known and perhaps best-loved dinosaur, Tyrannosaurus rex, was actually three separate species. Not so fast, says new ...

The dinosaur king may yet retain its crown. Earlier this year a study proposed that the iconic Tyrannosaurus rex should be split into three distinct species, but a new analysis says there isn’t enough ...

For many years, paleontologists have debated about whether there was a smaller relative of the Tyrannosaurus rex, or if those smaller fossils were really just awkward teenage versions of the king of ...

The Tyrannosaurus Rex has long been the creature of nightmares — but the "King of Tyrant Lizards" had a cousin who may have been just as terrifying. With the help of a paleontology enthusiast, ...

A provocative study published earlier this year proposed that the world’s best-known and perhaps best-loved dinosaur, Tyrannosaurus rex, was actually three separate species. Not so fast, says new ...

The reign of the fearsome dinosaur Tyrannosaurus rex ended around 66 million years ago, but people still can't get enough of the toothsome theropod. And now, thanks to the U.S. Postal Service (USPS) ...

EXCLUSIVE: Mark Witton also believes dinosaurs "may have been much smarter animals than we have given them credit for".

History’s most frightening dinosaur, the Tyrannosaurus rex, came from a long line of pipsqueaks. Scientists have identified a new cousin of the T. rex that reached only the 3-foot height of a toddler.

Scientists have unveiled Khankhuuluu, a new Mongolian dinosaur species that predates and closely resembles early Tyrannosaurs ...

A new study shows that 67-million-year-old fossils originally discovered around eighty years ago, are that of an adult ...