Blastozoa

Blastozoa

blastoids
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Subphylum:	Blastozoa
Classes
Class Eocrinoidea (Cambrian - Silurian) Class Parablastoidea (Ordovician) Class Rhombifera = Cystoidea, part (Ordovician - Devonian) Class Diploporita = Cystoidea, part (Ordovician - Devonian) Class Blastoidea (Ordovician - Permian)

Blastozoa is a subphylum of extinct animals belonging to Phylum Echinodermata. This subphylum is characterized by the presence of hydrospires.^[1] See also List of echinodermata orders.

References

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