A monstrous shark, predating whales, great whites, or even the bus-sized megalodon, once prowled the waters off what is now northern Australia during the Cretaceous period. Researchers, studying huge ...

Megalodon tends to dominate conversations about prehistoric ocean predators. Its massive jaws and oversized teeth have turned it into a pop-culture icon that feels almost mythical. Yet during the ...

Prehistoric sharks appeared hundreds of millions of years before dinosaurs and quickly became dominant marine predators. This ...

Long before the rise of the great white, a prehistoric shark dominated ancient oceans with a design built for overwhelming force. Fossil remains suggest this predator occupied the top of the food ...

The blue whale is the largest animal known to have ever lived, reaching lengths of nearly 100 feet and weighing more than 300 ...

A prehistoric predator changed its diet and body size during a major warming event 56 million years ago, revealing how climate change can reshape animal behavior, food chains, and survival strategies.

Isn't that the Loch Ness monster? -- The marine reptiles -- The ichthyosaurs -- The plesiosaurs -- The pliosaurs -- The Mosasaurs -- The "reason" for extinction ...

WELLINGTON, New Zealand (AP) — Long before whales were majestic, gentle giants, some of their prehistoric ancestors were tiny, weird and feral. A chance discovery of a 25 million-year-old fossil on an ...