An ancient shark older than forests still glides through deep oceans today. Its strange teeth, slow life cycle, and ...

The frilled shark, also called the lizard shark (Chlamydoselachus anguineus), is one of the ocean’s most ancient species. Its appearance and primitive features have barely changed since the Cretaceous ...

Deep below sunlight, a rarely seen frilled shark reveals ancient anatomy, slow reproduction, and mysterious habits, offering scientists fleeting clues about evolution, survival, and fragile ecosystems ...

In the age of dinosaurs — before whales, great whites or the bus-sized megalodon — a monstrous shark prowled the waters off what’s now northern Australia, among the sea monsters of the Cretaceous ...

When it wasn't putting T. rex to shame, the dinosaur Spinosaurus spent its time swimming -- and chowing down on sharks. Until now, scientists didn't have any proof that there were swimming dinosaurs.