Cristozoa

Cristozoa
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Cristozoa
Included groups
	Haikouella; Yunnanozoon; Vertebrate Cyclostomata Myxini; Petromyzontiformes; ; Ostracoderm Gnathostomata; ; ;

Cristozoa (also known as crest animals) is a grouping of animals possessing a neural crest and derivatives.[1]

It includes all the Craniata, as well as their immediate precraniate precursors. The precraniate crest animals, such Haikouella and Yunnanozoon, are all extinct and found only in Early Cambrian strata of Yunnan (southwestern China).[1][2]

References

Chen, J. ‐Y. (2008). "Early crest animals and the insight they provide into the evolutionary origin of craniates". Genesis. 46 (11): 623–639. doi:10.1002/dvg.20445. PMID 19003927.
Chen (2009). "The sudden appearance of diverse animal body plansduring the Cambrian explosion". The International Journal of Developmental Biology. 53 (5–6): 733–751. doi:10.1387/ijdb.072513cj. PMID 19557680.

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[Chen-2008-1] Chen, J. ‐Y. (2008). "Early crest animals and the insight they provide into the evolutionary origin of craniates". Genesis. 46 (11): 623–639. doi:10.1002/dvg.20445. PMID 19003927.

[Chen-2009-2] Chen (2009). "The sudden appearance of diverse animal body plansduring the Cambrian explosion". The International Journal of Developmental Biology. 53 (5–6): 733–751. doi:10.1387/ijdb.072513cj. PMID 19557680.