These fossils are from the high desert of Morocco. Crinoids are called sea lilies. The calyx is the top part of the animal that would correlate to the petals of a flower. The feather-like arms would wave back and forth in the water and, when they came in contact with small protozoans, capture them for dinner. Kind of like a modern day sea anemone. Fossil Profile: Crinoids. Lab: Carnivorous Sea Lilies.
Demos and Labs: Carnivorous Sea Lilies, Fossil Profile: Crinoids, Shark Tooth Souffle;