Eocrinoids are the earliest known group of stalked, arm-bearing echinoderms,
and were the most common echinoderms during the Cambrian.
Eocrinoids were a paraphyletic group that may have been ancestral to six other classes:
Rhombifera, Diploporita, Coronoidea, Blastoidea, Parablastoidea, and Paracrinoidea.

Eocrinoid Ascocystites drabowiensis c04 Kataoua Formation, El Kaid Errami, Morocco. Ordovician 475 million years old Specimen is 135x80mm. Sorry, sold. All sizes are approximate This is a one only fossil, it may not be available. If you require a fossil bigger or smaller please e-mail us with your request.