22077 - Great Collection of 3 OPHIURA SP Brittlestar Upper Ordovician Ktaoua Fm Onchopristis teeth collections The bones have some fractures

The bones have some fractures that have been glued and restored by the filling method

member of International Meteorite Collectrs Association (IMCA 5681)

They are characterised by a shovel-like cephalon (head)

which can collapse easily when even slight pressures are applied

22077 - Great Collection of 3 OPHIURA SP Brittlestar Upper Ordovician Ktaoua Fm Onchopristis teeth collections The bones have some fracturesBeautiful collection of 3 specimens of Ophiura. 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.