22077 - Great Collection of 3 OPHIURA SP Brittlestar Upper Ordovician Ktaoua Fm Onchopristis teeth collections It has a large

It has a large

which can collapse easily when even slight pressures are applied

the United Kingdom (19)

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

member of International Meteorite Collectrs Association (IMCA 5681)

22077 - Great Collection of 3 OPHIURA SP Brittlestar Upper Ordovician Ktaoua Fm Onchopristis teeth collections It has a largeBeautiful 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.