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Paragordius tricuspidatus.jpeg
Paragordius tricuspidatus
Scientific classification e
Kingdom: Animalia
Clade: Cycloneuralia
Clade: Nematoida

Nematoida is a grouping of animals, including the roundworms and horsehair worms.[1][2]


  1. ^ "articulata". Retrieved 2009-06-28. 
  2. ^ 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.