Millions of years ago, South Dakota was covered by a vast inland sea. This ancient seaway supported diverse marine life, ...

In the age of dinosaurs—before whales, great whites or the bus-sized megalodon—a monstrous shark prowled the waters off what's now northern Australia, among the sea monsters of the Cretaceous period.

Clams and snails rule today’s shores because their ancient ancestors survived a catastrophe that erased nearly all ocean life. The shells scattered along modern beaches are clues to an ancient ...

Ancient animal history is extremely difficult to reconstruct, for a number of reasons. Some of the earliest creatures in existence were soft-bodied and microscopic, leaving behind very little evidence ...

Coastlines can look like simple lines on a map. Over Earth's history, they acted more like gates and traps. A new study led by researchers at the University of Oxford suggests that the shape and ...

Scientists uncovered a 450-million-year-old crinoid fossil with preserved soft tissues, offering rare insights into the ...

Marine animals do not just struggle when ocean temperatures spike, they actually shrink, and a massive new study shows this ...