The classic Petoskey stone, this coral fossils in the Hexagonaria genus is the state stone of Michigan. This specimen is the species percarinata. It is primarily composed of limestone with slight silicification.
Hexagonaria cf. percarinata
Fossils I've Found on the Beach
The classic Petoskey stone, this coral fossils in the Hexagonaria genus is the state stone of Michigan. This specimen is the species percarinata. It is primarily composed of limestone with slight silicification.