Fossils are the remains or traces left behind by life forms that existed long ago and are normally found in sedimentary rocks. They are usually very small, like micro shells or pollen, and sometimes ...

A body fossil of a thorny-headed worm (Acanthocephala) has been dated to the Jurassic period, about 165 million years ago. It has characteristics of both Acanthocephala and tiny animals called ...

Earlier this year, a new study was published with a groundbreaking discovery from the John Day Fossil Beds Monument in central and eastern Oregon. While the park is mostly known for what are commonly ...