This is a 15 x 12″ mortality plate of detailed eocrinoid (Ascocystites sp.) fossils, collected near El Kaid Rami, Morocco. The reddish/orange coloration in some spots is due to the oxidization of iron pyrite.
Comes with a display stand.
Eocrinoids had a vase-shaped body (calyx) covered by crystalline calcite plates. These plates were symmetrical and bore ridges that met up with the ridges of other plates, creating a geometrical pattern. They had a stalk that attached them to the bottom of the ocean via a holdfast, and were benthic suspension feeders using their arms to move particles of food towards a mouth.













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