Opalized ammonite fossils are some of the most unique and spectacular paleontological specimens. They were formed through a ...

When it comes to finding fossils, scientists have found everything from the oldest known human fossil in Spain to the nine-million-year-old fossil of a sea giant. Safe to say, there isn't much that ...

The fossil was tiny— about the size of a modern sparrow— but it had features in common with a larger fossil bird called ...