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 ...

Opalized ammonite fossils are formed through a unique geological process involving the replacement of organic material with silica, which is the primary component of opal. This process can occur ...

"The guys were just digging this winter and looking for ammonite, and we came across what looked like fossilized bone," ...

Here’s everything we know about Kate Winslet and Saoirse Ronan’s new film, Ammonite, including the first-look trailer. When Kate Winslet and Saoirse Ronan sign onto a project, it’s pretty ...

Ammonites were shelled cephalopods that died out about 66 million years ago. Fossils of them are found all around the world, sometimes in very large concentrations. The often tightly wound shells of ...