Panarthropoda
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| Panarthropoda | |
|---|---|
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| Velvet worm | |
| Scientific classification | |
| Domain: | Eukaryota |
| (unranked): | Opisthokonta |
| Kingdom: | Animalia |
| Subkingdom: | Eumetazoa |
| (unranked): | Bilateria Protostomia |
| Superphylum: | Ecdysozoa |
| (unranked): | Panarthropoda Nielsen, 1997 |
| Phyla | |
Panarthropoda is a taxon combining the phyla Arthropoda, Tardigrada, and Onychophora.[1] Dunn et al. in 2008 suggested that the tardigrades could be grouped along with the nematodes, leaving Onychophora as the sister group to the arthropods.[2] Originally, they were considered to be closely related to the annelids, grouped together as the Articulata, but newer studies place them among a group called the Ecdysozoa.
Common characteristics of the Panarthropoda include the presence of legs and claws, a ventral nervous system, and a segmented body.
The term "Lobopoda" is sometimes used to describe onychophorans and tardigrades only.[3]
[edit] References
- ^ Telford MJ, Bourlat SJ, Economou A, Papillon D, Rota-Stabelli O (April 2008). "The evolution of the Ecdysozoa". Philos. Trans. R. Soc. Lond., B, Biol. Sci. 363 (1496): 1529–37. doi:10.1098/rstb.2007.2243. PMC 2614232. PMID 18192181. http://rstb.royalsocietypublishing.org/cgi/pmidlookup?view=long&pmid=18192181.
- ^ Dunn et al., CW; Hejnol, A; Matus, DQ; Pang, K; Browne, WE; Smith, SA; Seaver, E; Rouse, GW et al (2008). "Broad phylogenomic sampling improves resolution of the animal tree of life". Nature 452 (7188): 745–749. doi:10.1038/nature06614. PMID 18322464. http://www.nature.com/nature/journal/v452/n7188/abs/nature06614.html.
- ^ Cavalier-Smith T (August 1998). "A revised six-kingdom system of life". Biol Rev Camb Philos Soc 73 (3): 203–66. doi:10.1111/j.1469-185X.1998.tb00030.x. PMID 9809012. http://www3.interscience.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=1464-7931&date=1998&volume=73&issue=3&spage=203.
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