New analysis of the ancient crocodylian Deinosuchus confirms that this apex predator had jaws and teeth that were powerful enough to subdue massive dinosaur prey.
The Cretaceous, the last and longest period of the dinosaur age, lasted from about 145.5 million to about 65.5 million years ago. During the Cretaceous, mammals were small, about rat size, and the land was ruled by dinosaurs, including the duck-bills (hadrosaurs), horned dinosaurs (Triceratops), long-neck sauropods (Dreadnoughtus) and the tyrannosaurs (Tyrannosaurus rex). When the 79-million-year-long period ended, largely because of a 6-mile-wide (10 kilometers) asteroid slamming into the Yucatan Peninsula, about 80 percent of all animal species went extinct, including the non-avian dinosaurs.
The death strike of a Cretaceous "hell ant" from 99 million years ago is preserved in amber, revealing how these demonic-looking ants hunted.
Buckyballs are geometric shapes previously only seen in nature at the molecular scale. Scientists recently found them in marine animals dating to the Cretaceous.
Cryodrakon boreas, a newly described species of giant pterosaur, was recently identified from fossils found in Canada.
Paleontologists have discovered the remains of an ancient Loch Ness Monster look-alike in freezing Antarctica. And just like the legendary Nessie, it wasn't the runt of the litter.
This 92-million-year-old tyrannosaur was so small, it was only slightly larger than the skull of its mighty relative, Tyrannosaurus rex.
An ancient crab that lived during the dinosaur age was so strange, paleontologists are calling it the platypus of the crab world.
The partial skeleton of a baby Tyrannosaurus rex is for sale on eBay for nearly $3 million. Paleontologists are furious about it.
A fossil site in North Dakota preserves a unique snapshot of the minutes after an asteroid struck Earth around 66 million years ago.
What happened after the Cretaceous-ending asteroid struck Earth? A new fossil site may have answers.
A newfound dinosaur seems to wear its heart on its tail, according to paleontologists who found the enormous beast and realized this "hopeless romantic" had heart-shaped tail bones.