07877 - Superb 1.18 Inch OPHIURA SP Brittlestar Upper Ordovician Ktaoua Fm

Nice specimen. Not restored or prepared.

This type of brittlestar is quite representative of the Ordovician of the South of Morocco.

Its orange colors come from the limonite (iron oxide) that is the product of the oxidation of the original pyrite that mineralized these fossils.