30535 - Top Rare Association of 16 Edrioasteroid (Spinadiscus) Ordovician Edrioasteorids Genevievella granulatus †Rhombopterygia sp

†Rhombopterygia sp

which represents the 55% of its mineralogical composition

Precious tooth of Squalicorax pristodontus (Crow Shark) from a new phosphate location in the Atlas mountains (Morocco)

Physical characteristics: Many small dark brownish fragments without fusion crust

Beautiful scale of Lepidotes pankowskii

30535 - Top Rare Association of 16 Edrioasteroid (Spinadiscus) Ordovician Edrioasteorids Genevievella granulatus †Rhombopterygia spEdrioasteroidea is an extinct class of echinoderms. The living animal would have resembled a pentamerously symmetrical disc or cushion. They were obligate encrusters and attached themselves to inorganic or biologic hard substrates (frequently hardgrounds or brachiopods). The oldest undisputed fossils of Edrioasteroidea are known from Cambrian (Stage 3, about 515 520 Ma ago) of Laurentia and are among the oldest known fossils of echinoderms. Some