Scientists have long puzzled over the origins of a mysterious dinosaur excavated in the 1940s: Was it a young T. rex or another type of dinosaur? At first, researchers had only a tyrannosaur skull to ...

Two dinosaurs fossilized in combat, originally thought to involve a juvenile Tyrannosaurus rex testing its mettle against a Triceratops, actually feature a separate species frequently confused with ...

Dinosaur DNA may still be out of reach, but scientists are uncovering something almost as exciting—ancient blood vessels hidden inside fossilized bones. In a massive Tyrannosaurus rex nicknamed Scotty ...

WASHINGTON, April 30 (Reuters) - Surmising even the physical appearance of a dinosaur - or any extinct animal - based on its fossils is a tricky proposition, with so many uncertainties involved.

WASHINGTON (Reuters) -Tyrannosaurus subdued prey with raw power, using bone-crushing bite force. But other meat-eating dinosaurs that rivaled T. rex in size used different approaches. Giganotosaurus ...

Tyrannosaurus rex is one of the most recognizable names of the dinosaur world, a hulking and terrifying meat-eating behemoth. While fossil remains have been extensively studied, not much is known ...

A new type of giant long-necked dinosaur, twice the size of a tyrannosaurus rex, has been identified up by scientists from remains dug up in Thailand. The nagatitan, the largest-ever dinosaur found in ...

It passes a stegosaurus skeleton that billionaire hedge funder Ken Griffin bought for $44.6 million in 2024.

Scientists analyzed thousands of Late Cretaceous bones to develop a more reliable way to distinguish genuine tooth marks from disease, erosion, and other damage. A small number of fossils carried ...

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A new study suggests that predatory dinosaurs, such as Tyrannosaurus rex, did not have permanently exposed teeth as depicted in films such as Jurassic Park, but instead had scaly, lizard-like lips ...