Beautiful rare red ammonite, called Ammolite, with bite marks from a Mosasaur

An exceptional red-dominant Ammolite from Alberta, Canada, with clearly visible Mosasaur bite marks on the shell surface.

The bite marks are a paleontologically significant detail: Mosasaurs were marine reptiles of the Late Cretaceous that preyed on ammonites. Visible bite marks on a preserved ammonite shell document a specific predator-prey event 65 to 70 million years ago.

Ammolite consists of the iridescent aragonite shell of prehistoric ammonites. In the Bearpaw Shale of the Late Cretaceous, the shell was transformed into its current opalescent form under pressure and mineralization.

The almost monochromatic red iridescence of this piece is rare among Canadian Ammolites; most pieces show broader color palettes. Collectors refer to red-dominant pieces as the Ruby variety of Ammolite.

Sealed with a resin layer to stabilize the thin aragonite layer.

A top-class collector's item, at the intersection of mineral, fossil, and natural historical document value.