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 that point, during the Cretaceous period, sharks were bottom dwellers, living in the depths of the ocean. But a massive outpouring of volcanic lava sent carbon dioxide levels soaring, ...

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

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.

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 ...

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 ...

In the past 500 million years on Earth, there have been five mass extinctions. Here are a few incredible species that managed ...

Scientists have calculated the water temperature at which tiger sharks are most active and abundant. They say the sharks, which are second only to great whites in attacking people, prefer a balmy 22C.

Humans are killing sharks at a much faster rate than sharks can repopulate. Sharks mature slowly, have slow reproductive rates, and produce few offspring—all of which makes them extremely vulnerable ...

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 ...