Rare Anthracoceras beargulchensis Fossil Display – from Montana

This authentic Anthracoceras beargulchensis fossil dates back to the Mississippian Period, approximately 330–320 million years ago, when shallow prehistoric seas covered much of present-day North America. Preserved within the renowned Bear Gulch Member of the Heath Formation, this specimen represents an extinct cephalopod related to early nautiloids.

The fossilized shell impression is subtly preserved within the natural stone matrix, showcasing the delicate spiral structure characteristic of these ancient marine animals. Fossils from Bear Gulch are especially prized among collectors and researchers due to their scientific importance and remarkable preservation.

Professionally mounted and labeled, this specimen makes an excellent display piece for fossil collectors, educators, or anyone fascinated by prehistoric marine life.

Key Features:

Authentic Anthracoceras beargulchensis fossil

Mississippian Period specimen

Approximately 330–320 million years old

Recovered from the Bear Gulch Member

Heath Formation, Fergus County, Montana

Professionally displayed and labeled

Great collector and educational specimen

Exact fossil shown