Starfish (Petraster?) Fossil Multiple Plate - Ordovician

This is a section of rock from the Ordovician aged Tioririne Formation containing a pair of fossil starfishs probably of the genus Petraster and mutliple Edrioasteroid fossils of the species Spinadiscus lefebvrei. The orange coloration is due to the oxidization of iron pyrite that originally preserved them. There is a repaired crack through one of the starfishs, though there's no indication of any restoration.

Note: You have to be careful when purchasing the starfish fossils from Morocco as I've seen many specimens simply painted onto the rock and passed off as being real.

Edrioasteroids are an extinct class of echinoderms that lived from the Ediacaran until the Permian, about 300 million years ago. The living animal would have resembled a pentamerously symmetrical disc or cushion.