"While they might not be the first birds of prey to ever evolve, their fossils are the earliest known examples of predatory birds." The three fossils Clark studied in this paper had been collected ...

They show an organism was there, but are not the actual organism itself (which would be a body fossil). Dinosaur footprints and worm burrows are examples of trace fossils, as are coprolites ...

Ammonite fossils, an example is shown here, are sea creatures that became extinct about 65 million years ago. Fossil remains have been found in rocks of all ages. Fossils of the simplest organisms ...

Ammonite fossils, an example is shown here, are sea creatures that became extinct about 65 million years ago. Fossil remains have been found in rocks of all ages. Fossils of the simplest organisms ...

In a May 11 letter to the editor, “Our addiction to fossil fuels,” the author wrote about a friend’s alcoholism being like people using fossil fuels and terming that as an “addiction.” Most ...