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

Based on the fossil record, ammonites came in a wide range of sizes and shapes, from smaller than an inch to as large as nine feet wide. Some ammonites had long, straight shells, while others had ...

Ammonite fossils were unearthed during ground work for East West Rail between Cambridge and Oxford Fossils including sharks' teeth from the dinosaur age have been uncovered during ground ...

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.