1 Ophiuroidea. A nice big example. Rock has been repaired, as star fish was found by breaking the rock, and then preparing down to the starfish. Actual weight 1.5kg. Postage included for mainland UK customers.
Age: Ordovician/470 million years old
Size: Approx rock 21 x 16cm. Brittle star 7cm minimum. But super hard to measure.
Location: Draa Valley, Morocco.