An enormous carnivorous dinosaur that once roamed North America kept Tyrannosaurus rex from achieving its potential for millions of years, a new discovery suggests. The new dinosaur, dubbed Siats ...

The newly-discovered species has been called Siats meekerorum, whose first name honours a cannibalistic monster in the mythology of the Native American Ute people. A giant meat-eater, the dino lorded ...

A newly discovered predatory dinosaur from Utah is so large that it may represent the biggest species of meat-eating dino that ever lived in North America. The dinosaur, Siats meekerorum aka "Man ...

Behold Siats meekerorum, one of the largest terrestrial apex predators ever discovered. Paleontologists think it may have been bigger than even the almighty T. rex, holding it back on the evolutionary ...

Getting your Trinity Audio player ready... A team led by scientists from the Field Museum believes that a new predatory dinosaur discovered in Utah rivaled the T. rex. in its dominance tens of ...

TORONTO – If you thought that the Tyrannosaurus rex was something to be afraid of, meet Siats meekerorum. The newly-discovered dinosaur belongs to a species of carcharodontosaur, a group of giant meat ...

Tyrannosaurs reign as the most famous of all meat-eating dinosaurs. But they didn't always dominate, suggests the newly discovered bones of a massive carnivorous dinosaur that lived 98 million years ...

A newly discovered dinosaur that lived 100 million years ago has been unearthed by palaeontologists. Experts believe it is one of the largest species of meat-eating dinosaur that ever lived in North ...