Miners Looking for Ammonite Stumble on Rare Complete Fossils of 'Ocean Predators' From 100 Million Years Ago Evidence of ...

Opalized ammonite fossils are some of the most unique and spectacular paleontological specimens. They were formed through a geological process known as opalization, wherein organic material from ...

or the "elephant pit," a site less than 1,000 feet from where the fossils of Homo antecessor were discovered in 1994. The bones were not enough for researchers to determine Pink's age or gender.

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 ...

We now know ammonites are extinct cephalopod molluscs related to squids and octopuses, which lived in the seas of the Mesozoic Era between about 201 and 66 million years ago. They are preserved as ...

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.