Limestone cliffs and cave systems hold clues to a prehistoric ocean.

A new giant long-necked dinosaur, Dasosaurus tocantinensis, unearthed in Brazil, reveals ancient land connections. Its close evolutionary ties to a Spanish species suggest dinosaurs migrated between ...

What if a giant sea reptile from the dinosaur era still existed in the ocean’s depths? The science says extremely unlikely tiny populations, no fossil trace, and no credible sightings. But the ocean ...

Marine fossils discovered near the summit of Mount Everest reveal that the world’s highest mountain was once part of an ancient ocean floor before tectonic collisions lifted the Himalayas.

When colossal asteroids rock Earth, it's not all doom and gloom. The menacing asteroid that wiped out non-avian dinosaurs left a colossal marine crater in what's now the Yucatan Peninsula. But after ...