The cataclysmic end-Permian mass extinction and extreme global warming prompted the emergence of modern marine ecosystems at the beginning of the Age of Dinosaurs (or Mesozoic era), some 252 million y ...

While sharks may have emerged before trees, it’s the latter that holds the title of the longest-living organisms. The oldest-known, still-living, individual tree is a 4,857-year-old Californian ...

A fossilized rib from a ferocious, extinct whale was discovered in a creek bank in Yazoo County, Mississippi. The rib belonged to a zygorhiza, a toothed whale that lived 34 to 38 million years ago and ...

The idea of a battle between a megalodon and a blue whale captures the imagination, though these giants never shared the same oceans. The megalodon, an extinct apex predator, was equipped with ...

(CNN) — Tens of millions of years ago, an apex predator resembling a giant crocodile stalked the humid freshwater floodplains of southern Patagonia. Measuring up to 11.5 feet (3.5 meters) long and ...

Add Yahoo as a preferred source to see more of our stories on Google. A rare fossil of Joaquinraptor casali from Patagonia reveals a powerful predator that may have dined on crocodiles. (CREDIT: The ...

Along South America’s windswept southern coast, Magellanic penguins have spent decades nesting in relative safety. For much of the twentieth century, sheep ranching dominated the region, and pumas ...