5.5" Wide Ophiura Brittle Star Fossil

This is a large Ophiura brittle star fossils from the Kataoua Formation of Morocco. These Ophiura brittle stars are Ordovician in age, or approximately 450 million years. The dark orange coloration is due to the oxidization of iron pyrite. The tips of two of the arms are funning off of the rock.

Comes with a display stand.