Researchers have discovered the oldest known example of a predator-prey “arms race,” based on their study of ancient fossils. This ancient predator-prey relationship took place 517 million years ago ...

In 2000, researchers thought they found the oldest fossil octopus, which lived over 300 million years ago. But it may just be ...

Some fossils of long-extinct sea creatures display brilliant rainbow colors. Known as ammolite, these gems come from the fossilized shells of ammonites, squid-like marine animals that vanished with ...

The world's oldest octopus fossil is no longer an octopus. A new study by researchers says the 300-million-year-old creature ...

Ammolite is a rare kind of gemstone, valued for its vibrant iridescent colors, which shift rapidly between red, green, and blue hues. The most famous specimens come from the curled shells of ammonites ...

Skeleton season may be just around the corner, but the skeleton age dawned with the early Cambrian Period, about 538 million to 506 million years ago. In this time span, most major animal groups ...

A construction project at San Pedro High School in Los Angeles revealed nearly 9-million-year-old sea creature fossils buried under the school. Scientists believe the area was once fully underwater, ...