Tutcetus rayanensis swimming in the Tethys ocean of present-day Egypt, 41 million years ago, in an illustration. Antarctic blue whales, the largest animals on Earth, can reach 98 feet from mouth to ...

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 ...

Call it an unfinished story, but with a plot that's a grabber. It's the tale of an ancient land mammal making its way back to the sea, becoming the forerunner of today's whales. In doing so, it lost ...

Did you know whales evolved from a land-based animal into an ocean-going mammal? To explore the evidence, we need to look at the desert, which may seem strange when discussing whales. The ocean once ...

An extraordinary fossil find along Victoria’s Surf Coast has revealed Janjucetus dullardi, a sharp-toothed, dolphin-sized predator that lived 26 million years ago. With large eyes, slicing teeth, and ...

The asteroid that struck the Earth 66 million years ago changed far more than life on land. Ocean ecosystems also collapsed in the aftermath of the strike, and, like the non-avian dinosaurs on land, ...