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

Location: Assa Zag Region, Morocco

Weight: 8.8 Ounces   

Dimensions: 4.1 Inches Long, 3.2 Inches Wide, 1.3 Inches Thick 

The item pictured is the one you will receive.

Devonian Age, 350 million years old

Hexagonaria is an extinct genus of colonial rugose coral that lived in ancient seas during the Devonian period, around 350 million years ago. These corals grew in large, rounded colonies composed of tightly packed hexagonal corallites, creating the striking geometric patterns for which they are well known.

Fossil specimens of Hexagonaria are preserved in Devonian limestone formations, with notable discoveries in Morocco, particularly in the Sahara Desert and the Assa Zag region. When polished, the internal structure of the coral becomes visible, revealing a central columella surrounded by fine radiating septae, which once supported the living coral polyps.

Hexagonaria is closely related to the famous Petoskey stone of Michigan, USA, identified as Hexagonaria percarinata. Valued for their natural color variations—ranging from light creams and tans to deeper brown tones—polished Hexagonaria corals are widely used in jewelry, decorative art, and fossil collections, combining visual beauty with deep geological history.