Bearpaw Formation

Contact (red arrow) between the underlying marine shales of the Bearpaw Formation and the coastal Horseshoe Canyon Formation.
Bearpaw shale being excavated to recover ammonites for ammolite production.
A specimen of Placenticeras ammolite from the Bearpaw Formation.

Geologic formation of Late Cretaceous age.

- Bearpaw Formation
Contact (red arrow) between the underlying marine shales of the Bearpaw Formation and the coastal Horseshoe Canyon Formation.

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Alpha

Unprocessed sample of ammolite; a "dragon skin" pattern is apparent

Ammolite

Opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America.

Opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America.

Unprocessed sample of ammolite; a "dragon skin" pattern is apparent
An iridescent ammonite from Madagascar
Map of North America highlighting the shallow inland sea present during the mid-Cretaceous period.
Korite's mechanized mining operations are fairly basic, involving the excavation of shallow pits with backhoes.
Another view of Korite's open-pit mining operations in Alberta, Canada.
Placenticeras ammolite specimen, from Bearpaw Formation, Campanian Stage, upper Upper Cretaceous, ~70-75 Ma.
The iridescent flashes (labradorescence) of labradorite may lead to its confusion with ammolite by the unfamiliar, but the overall appearance is unconvincing as an imitation.
Ammolite jewelry by Korite. The ammolite gems are triplets, as evidenced by their convex profiles. Ammolite is best used in pendants, earrings, and brooches due to its fragility.

Significant deposits of gem-quality ammolite have only been found in the Bearpaw Formation that extends from Alberta to Saskatchewan in Canada and south to Montana in the USA.

Albertonectes

Life restoration
Size of Albertonectes vanderveldei relative to a human

Albertonectes is an extinct genus of elasmosaurid plesiosaur known from the Late Cretaceous (middle upper Campanian stage) Bearpaw Formation of Alberta, Canada.

The Permian through Jurassic strata of the Colorado Plateau area of southeastern Utah demonstrate the principles of stratigraphy.

Eastend Formation

Stratigraphical unit of Maastrichtian age in the Western Canadian Sedimentary Basin.

Stratigraphical unit of Maastrichtian age in the Western Canadian Sedimentary Basin.

The Permian through Jurassic strata of the Colorado Plateau area of southeastern Utah demonstrate the principles of stratigraphy.

It is eroded to the north and east, where the Frenchman Formation lies directly over the Bearpaw Formation.

Nakonanectes

Elasmosaurid plesiosaur of the late Cretaceous found in 2010 the state of Montana in the United States.

Elasmosaurid plesiosaur of the late Cretaceous found in 2010 the state of Montana in the United States.

The fossil was found in the Bearpaw Formation, a late Campanian/early Maastrichtian rock, making it one of the last known elasmosaurids to have lived in the Western Interior Seaway.

Paleogeography of the Campanian

Blood Reserve Formation

Geologic formation of Late Cretaceous age in the Western Canada Sedimentary Basin.

Geologic formation of Late Cretaceous age in the Western Canada Sedimentary Basin.

Paleogeography of the Campanian

The Blood Reserve Formation rests conformably on the marine shales and siltstones of the Bearpaw Formation, and is overlain by the floodplain deposits of the St. Mary River Formation.