Cristozoa

Cristozoa
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Clade: Cristozoa
Included groups

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 as Yunnanozoon, are all extinct and found only in Early Cambrian strata of Yunnan (southwestern China).[1][2]This group is now considered to be paraphyletic as new studies indicate that Yunnanozoon occupies more basal position in the phylum Chordata than previously thought.

References

  1. 1 2 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.
  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.


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