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 ...

Longtime fossil collector Barry Norbeck donated thousands of shells and other invertebrate fossils to the Calvert Marine ...

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

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At the end of the Paleocene and beginning of the Eocene epochs, between 59 to 51 million years ago, Earth experienced dramatic warming periods, both gradual periods stretching millions of years and ...

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 ...

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, ...