A new study by researchers at the University of Minnesota Twin Cities challenges previous classifications paleontologists use ...

What do fossilized leaves, an asteroid, and Florida sinkholes have in common? Dr. Kirk Johnson is Sant Director at the Smithsonian Institution, National Museum of Natural History, and has the answers.

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 ...

Dive into deep time to discover how fossils form, the ocean's surprising origins, and more. What do fossilized leaves, an asteroid, and Florida sinkholes have in common? Dr. Kirk Johnson is Sant ...