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 ...

Much of the Mesozoic aged rock in Europe has been sectioned into 'ammonite zones', where rocks in different areas can be associated with each other based on the ammonite fossils found in them. Zoë ...

Ammonite shells are used today as index fossils, meaning they can help date other fossils that are found in the same layer of marine rock. These cephalopods make for ideal index fossils because ...

Some ammonite species were tiny, others as big as a person. Ammonites lived in the sea. If you find an ammonite fossil in a rock, you know that millions of years ago the spot where you’re standing ...

The company spotted the fossils of a mosasaur—a prehistoric ... "The guys were just digging this winter and looking for ...

featuring photos of the dinosaur bones as Rosenthal found them in the dirt and side-by-side examples of ammonite fossils still embedded inside rock. Eric Begonia, a Portland biology teacher for ...

Fossils found in the northern part of Hokkaido are a new type of ammonite, the once-ubiquitous spiral-shelled creatures that went extinct with the dinosaurs 65 million years ago, researchers said.

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 ...