Panarthropoda

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Panarthropoda
Temporal range: Cambrian - Recent
Velvet worm
Scientific classification
Kingdom: Animalia
Subkingdom: Eumetazoa
(unranked): Bilateria
Protostomia
Superphylum: Ecdysozoa
(unranked): Panarthropoda
Nielsen, 1997
Phyla

Arthropoda
Onychophora
Tardigrada
Lobopodia

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 diania, onychophorans and tardigrades only.[3]

References[edit]

  1. ^ 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. 
  2. ^ 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. 
  3. ^ 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.