Blastozoa

Blastozoa
	File:Haeckel Blastoidea.jpg
	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);

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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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