Deep beneath the Earth’s surface, researchers have uncovered striking new evidence of ancient seafloor buried for millions of years. This hidden remnant, detected using seismic waves, offers fresh ...

Researchers had based some informed guesses about just how massive the megalodon — a prehistoric giant fish that hunted the oceans 13 million years to 15 million years ago — was by comparing existing ...

But the shifted continents, expanded coasts, and widened oceans had cooled and moistened the planet's climate and set in motion dramatic changes to the flora and fauna. An extraterrestrial impact ...

The study also claims that these oceans would not have lasted long as the planet transformed into its current arid environment. While scientists claim that oceans once existed on Venus ...

The many chambers of their shells likely helped these cephalopods glide through the planet’s warm, shallow seas. A thin, tubelike structure called a siphuncle pumped air through the interior ...