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Blastozoa; Temporal range: Cambrian–Permian PreꞒ Ꞓ O S D C P T J K Pg N
	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.^[1] It ranged from the Cambrian to the Permian.

A significant species has been found at the Zaouïa Formation.^[2]

References

^ Sprinkle, J. (1973). "Morphology and evolution of blastozoan echinoderms". Harvard Special Publication: Museum of Comparative Zoology.
^ Makhlouf, Y.; Lefebvre, B.; Nardin, E.; Nedjari, A.; Paul, C.R.C. (2017), "The diploporite blastozoan Lepidocalix pulcher from the Middle Ordovician of northern Algeria: Taxonomic revision and palaeoecological implication", Acta Palaeontologica Polonica, 62: 299–310, doi:10.4202/app.00286.2016, retrieved 2020-05-29

External links

Harvard: Subphylum Blastozoa Archived 2017-12-05 at the Wayback Machine

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

[2] Makhlouf, Y.; Lefebvre, B.; Nardin, E.; Nedjari, A.; Paul, C.R.C. (2017), "The diploporite blastozoan Lepidocalix pulcher from the Middle Ordovician of northern Algeria: Taxonomic revision and palaeoecological implication", Acta Palaeontologica Polonica, 62: 299–310, doi:10.4202/app.00286.2016, retrieved 2020-05-29

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