"I immediately thought of gar." ...

A study led by researchers at the American Museum of Natural History presents the oldest known example in the fossil record of an evolutionary arms race. These 517-million-year-old predator-prey ...

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, ...

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 ...

Learn how a 260-million-year-old Permian reptile, once thought to explain turtle evolution, turned out to belong to a different lineage, reshaping the story of turtle origins in the Triassic Period.