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

Jewelry makers have been showcasing the marine mollusk, and vintage sellers say they can’t keep them in stock.

Look at the ammonite under the microscope ... like animal (see the complete specimen). This particular chamber is filled entirely with the fecal pellets of some tiny marine worm that probably left no ...

The fossil belonged to an extinct group of marine mollusks known as ammonites, close relatives of modern-day squids and octopuses. But this specimen stood out. It shimmered with the vibrant colors ...

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 ...

An ammonite fossil with a carved snake's head Zoë Hughes ... defensive spines or shell-strengthening ornamentation. We know this specimen of Kosmoceras phaeinum is a male from the long prongs, known ...

This specimen of Maorites densicostatus was found in Antarctica ... Hildoceras bifrons with a carved snake's head Before science had an answer, ammonite fossils were a bit of a mystery. Because they ...

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.

Lepeco and his team discovered the "remarkably well-preserved" ant specimen while systematically examining one of the world's largest collections of fossil insects from the Crato Formation ...