An examination of an aquatic, shrimplike creature that lived half a billion years ago offers insight into how arthropods with mandibles became so common. By Rebecca Dzombak About 70 percent of the ...

Learn how fossils form through sedimentation and mineralization. Discover types like moulds, casts, and trace fossils in our guide.

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 ...

Scientists in India unearthed a remarkable dinosaur egg. Inside this fossilized egg, researchers discovered another egg, a ...