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From Wikipedia, the free encyclopedia

Scalidophora is a group of marine pseudocoelomate invertebrates, consisting of the three phyla Kinorhyncha, Priapulida, and Loricifera.[1] The members of the group share a number of characteristics, including introvert larvae and moulting of the cuticle (ecdysis). Their closest relatives are thought to be the Panarthropoda, Nematoda and Nematomorpha; they are thus placed in the group Ecdysozoa.

The two species in the genus Markuelia, known from fossilized embryos from the middle Cambrian, are thought to be stem Scalidophorans.

The group has also been considered a single group, Cephalorhyncha,[2] with three classes.


  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. PMID 18192181. PMC 2614232.  
  2. ^ "Explanations.html". Retrieved 2009-06-28.  


Up to date as of January 23, 2010

From Wikispecies


Main Page
Cladus: Eukaryota
Supergroup: Unikonta
Cladus: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Cycloneuralia
Cladus: Scalidophora
Cladi: Kinorhyncha - Loricifera - Priapulida


Scalidophora Lemburg, 1995


  • Dong, X., P.C.J. Donoghue, J.A. Cunningham, J. Liu & H. Cheng (2005). The anatomy, affinity, and phylogenetic significance of Markuelia. Evolution & Development 7 (5): 468–482.
  • Lemburg, C. (1995). Ultrastructure of the sense organs and receptor cells of the neck and lorica of Halicryptus spinulosus larva (Priapulida). Microfauna Marina 10: 7–30.
  • Maas, A., D. Huang, J. Chen, D. Waloszek & A. Braun (2007). Maotianshan-Shale nemathelminths—Morphology, biology, and the phylogeny of Nemathelminthes. Palaeogeography, Palaeoclimatology, Palaeoecology 254: 288–306.
  • Maas, A., D. Waloszek, J.T. Haug & K. Müller (2007). A possible larval roundworm from the Cambrian ‘Orsten’ and its bearing on the phylogeny of Cycloneuralia. Memoirs of the Association of Australasian Palaeontologists 34: 499-519.
  • Webster, B.L., R.R. Copley, R.A. Jenner, J.A. Mackenzie-Dodds, S.J. Bourlat, O. Rota-Stabelli, D.T.J. Littlewood & M.J. Telford (2006). Mitogenomics and phylogenomics reveal priapulid worms as extant models of the ancestral Ecdysozoan. Evolution & Development 8 (6): 502–510.


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