Sharks have been losing teeth for 400 million years. Here’s a guide to uncovering some of these plentiful fossils across the ...

Exquisitely preserved fossils of a shark that thrived during the Cretaceous period appear to solve a long-standing mystery around how it hunted and where it fits into the shark evolutionary tree.

At the beginning Cretaceous of Period (145 million to 66 million years ago) sharks were once again widely common and varied in the ancient seas, before experiencing their fifth mass extinction event.

The remnants of a mosasaur show a sea predator that was ill equipped for slashing bites, and likely preferred to swallow its ...

Long before the carnage began, the Cretaceous picked up where the Jurassic ... snakelike mosasaurs. Rays and modern sharks became common. Sea urchins and sea stars (starfish) thrived; coral ...

Cretoxyrhina was one of the largest sharks and a formidable predator in the Late Cretaceous seas. Nicknamed the Ginsu shark after the kitchen knife that slices and dices, Cretoxyrhina ripped apart ...

Elsewhere in New Mexico these two formations of the Cretaceous Period yield shark teeth and dinosaur tracks a hundred million years old. The road twisted through a deep canyon, with its own smaller ...

The merest hint of Atlantis' former glory is now left as the gemlike Seychelles islands, the Atlanteans replaced by corals, sharks ... dinosaurs at the end of the Cretaceous Period about 65 ...

but two different carnivores -- a crocodilian and a shark -- is revealing ... Aug. 26, 2024 — An international team of paleontologists has found matching sets of Early Cretaceous dinosaur ...

2. The Jurassic and Cretaceous seas contained shell-crushing animals that may have been responsible for the disappearance of many species of brachiopods during this period. These shell-crushing ...

Paleontologists have added another species to the Cretaceous-period dinosaur fauna of Europe ... as indicated in the present case by a shark tooth present in the matrix, close to one of the bones in ...