“A 'Gem' Ammonite in Matrix from the Bearpaw Formation in Alberta, Canada dates to the Cretaceous some 71 million years ago and exhibits superb iridescence,” say Heritage ahead of their Nature ...

In fact, iridiscent opalized ammonites are so striking that they have their very own mineral name: ammolite. Ammolite is biogenic gem material primarily found in Alberta, Canada. However ...

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.

Koichi Fukuoka’s career as a copperplate engraver took an unexpected turn after he encountered fossils of ammonites, a spiral-shelled creature that lived in the age of the dinosaurs. The artist ...