Under the cover of darkness in desert habitats about 70 million years ago, in what is today Mongolia and northern China, a gangly looking dinosaur employed excellent night vision and superb hearing to thrive as a menacing pint-sized nocturnal predator.

By analyzing what’s known about the dinosaur, paleontologists conclude there were 2.5 billion T. rex over the 2.4-million-year existence of the species

Although an asteroid impact has long been the suspected cause of the mass extinction 66 million years ago, researchers think new evidence finally closes the case.

How can All Things Considered consider all things without considering dinosaurs? That's the question posed by 8-year-old Leo Shidla of Minneapolis.

New scans of a tiny Cretaceous jaw and claw show the tyrant dinosaurs started out the size of a small dog. THE FIRST KNOWN fossils of baby tyrannosaurs reveal that some of the largest predators ever to stalk the Earth started life about the size of a Chihuahua—with a really long tail.

The skeleton is still far from complete but paleontologists say what they've found suggests the dinosaur may be more than 120 feet long

When a dog-sized Psittacosaurus was living out its days on Earth, it was probably concerned with mating, eating, and not being killed by other dinosaurs. It would never even have crossed its mind that, 120 million or so years later, scientists would

Paleontologists uncovered a great deal about the “terrible lizards” this year

For the entirety of my career as a journalist covering paleontology, I’ve been wanting to know: What does a dinosaur’s butthole look like? When I wrote My Beloved Brontosaurus, a book about dinosaur biology, the chapter on reproduction required a lot of time imagining the nature of a Jurassic behind; one had yet to be found preserved. Even dinosaur models and sculptures often demur on the point of the dino butt, leaving the terrible lizards with terrible constipation.

He was hiking with his father in Alberta, Canada, when he stumbled upon the Hadrosaur remains.

Buyer unknown, but paleontologists worry researchers will lose access

Several complete skeletons of the unusual feathered two-fingered dinosaurs were unearthed in the Gobi Desert.

While many fossils have been flattened by time and the elements, a titanosaur found in an egg was preserved in three dimensions.

Four bones found at Shanklin belonged to a new species of theropod dinosaur, a study finds.

A 66m-year-old murder mystery has finally been solved, researchers say, revealing an enormous asteroid struck the killer blow for the dinosaurs. The Cretaceous/Paleogene extinction event resulted in about 75% of plants and animals – including non-avian dinosaurs – being wiped out. But the driving cause of the catastrophe has been a topic of hot debate.

A story for my granddaughter about oxygen, evolution, and our planet’s fate. By Walter Murch

A mysterious 68-million-year-old fossil found on Seymour Island off Antarctica’s coast that looked like a deflated football has turned out to be a unique find - the second-largest egg on record and one that may have belonged to a huge marine reptile that lived alongside the dinosaurs.

The 106-million-year-old tracks suggest that other puzzling nearby fossils were also likely made by a bipedal croc ancestor, not a giant pterosaur.

'The worst-case scenario is exactly what happened,' researchers reveal

The discovery that the badger-like animal lived alongside dinosaurs challenges ideas about mammals.