Blastozoa

Blastozoa
	Blastoids, an example of a single group of blastozoans.
Scientific classification
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 animals belonging to Phylum Echinodermata. This subphylum is characterized by the presence of specialized respiratory structures and brachiole plates used for feeding.[1] This subphylum ranged from the Cambrian to the Permian.

References

Sprinkle, J. (1973). "Morphology and evolution of blastozoan echinoderms". Harvard Special Publication: Museum of Comparative Zoology.

External links

Harvard: Subphylum Blastozoa

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[1] Sprinkle, J. (1973). "Morphology and evolution of blastozoan echinoderms". Harvard Special Publication: Museum of Comparative Zoology.