Pancrustacea

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Pancrustacea
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
(unranked) Pancrustacea
Zrzavý & Štys, 1997
Subphyla

Crustacea
Hexapoda

Pancrustacea is a proposed taxon, comprising all crustaceans and hexapods [1]. This grouping is contrary to the Atelocerata hypothesis, in which Myriapoda and Hexapoda are sister taxa, and Crustacea are only more distantly related.

A monophyletic Pancrustacea has been supported by several molecular studies [2][3][4], in most of which the subphylum Crustacea is paraphyletic with regard to insects (that is, that insects are derived from crustacean ancestors)

[edit] References

  1. ^ J. Zrzavý & P. Štys (1997). The basic body plan of arthropods: insights from evolutionary morphology and developmental biology. Journal of Evolutionary Biology 10: 353-367. 
  2. ^ Jeffrey W. Shultz & Jerome C. Regier. Phylogenetic analysis of arthropods using two nuclear protein-encoding genes supports a crustacean + hexapod clade. Proc. R. Soc. Lond. B 267: 1011–1019. 
  3. ^ Gonzalo Giribet & Carles Ribera (2000). A review of arthropod phylogeny: new data based on ribosomal DNA sequences and direct character optimization. Cladistics 16: 204–231. 
  4. ^ Francesco Nardi, Giacomo Spinsanti, Jeffrey L. Boore, Antonio Carapelli, Romano Dallai & Francesco Frati (2003). Hexapod origins: monophyletic or paraphyletic?. Science 299: 1887–1889.