07203 - Top Rare Associated Ordovician Crinoid and Edrioasteroid (Spinadiscus) Fish teeth bulk from the Aoufous Formation and

from the Aoufous Formation and Ifezouane Formation (Kem Kem Basin

(2012) A skull fragment of the mosasaurid Prognathodon cf

08 Inch = 2

Mosasauridae) from the Maastrichtian of Angola

07203 - Top Rare Associated Ordovician Crinoid and Edrioasteroid (Spinadiscus) Fish teeth bulk from the Aoufous Formation andEdrioasteroidea 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