Blastozoa

Blastozoa; Temporal range:
	Blastoids, an example of a single group of blastozoans.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Echinodermata
Subphylum:	†Blastozoa
Classes
	Class Eocrinoidea (Cambrian - Silurian); Class Parablastoidea (Ordovician); Class Rhombifera (Ordovician - Devonian); Class Diploporita (Ordovician - Devonian); Class Blastoidea (Ordovician - Permian); Class Paracrinoidea (Ordovician-Silurian);

Blastozoa is a subphylum of extinct Echinoderms characterized by the presence of specialized respiratory structures and brachiole plates used for feeding. It ranged from the Cambrian to the Permian.

A significant species has been found at the Zaouïa Formation.

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