4" Polished Hexagonaria Coral Fossil Devonian Age 350 Million Yrs Old Morocco

Location: Assa Zag Region, Morocco

Weight: 11.8 Ounces   

Dimensions: 4 Inches Long, 3.1 Inches Wide, 1.5 Inches Thick 

The item pictured is the one you will receive.

Devonian Age, 350 million years old

Hexagonaria represents an extinct group of colonial rugose corals that inhabited warm, shallow seas during the Devonian period, around 350 million years ago. These corals grew as large, dome-shaped colonies made up of tightly arranged hexagonal corallites, producing the iconic honeycomb pattern visible in polished specimens.

Well-preserved Hexagonaria fossils are recovered from Devonian limestone deposits, particularly in Morocco’s Sahara Desert and the Assa Zag region. Polishing reveals the coral’s internal architecture, including a prominent central columella and finely radiating septae, which once supported living coral polyps.

Hexagonaria is closely related to the famous Petoskey stone of Michigan, USA, commonly identified as Hexagonaria percarinata. Due to their intricate patterns and natural earth-toned coloration, these fossils are widely appreciated for jewelry making, interior décor, and private collections, while also serving as tangible records of ancient marine ecosystems.