Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Phylum: Nematoda
Classis: Chromadorea
Ordo: Rhabditida
Subordo: Spirurina
Infraordines: Ascaridomorpha – Camallanida – Dracunculoidea – Gnathostomatomorpha – Oxyuridomorpha – Rhigonematomorpha – Spiruromorpha
Synonyms
Spiruria
References
Morffe, J. & Hasegawa, K. 2017. Rhigonema naylae n. sp. (Rhigonematomorpha: Rhigonematidae) a new parasitic nematode from a Japanese polydesmid millipede (Polydesmida: Xystodesmidae). Zootaxa 4269(2): 277–286. DOI: 10.11646/zootaxa.4269.2.6. Reference page.
Subclass Spiruria comprises mostly parasitic secernentean nematodes. In an alternate classification, they are treated as suborder Spirurina, with the orders listed here being ranked as infraorders.
The Ascaridida and the Oxyurida, which include worms that infect many mammals (including marine mammals), are sometimes placed in subclass Rhabditia. But that seems as spurious as the erstwhile placement of the Rhigonematida in subclass Tylenchia. The Camallanida and Drilonematida are sometimes included in the Spirurida as suborder and superfamily, respectively.[1]
Some important species
Giant roundworm (Ascaris lumbricoides), causes ascariasis in humans
Toxocara canis, parasite of dogs
Anisakis, responsible for the human disease Anisakiasis
Footnotes
ToL (2002)
References
Tree of Life Web Project (ToL) (2002): Nematoda. Version of 2002-JAN-01. Retrieved 2008-NOV-02.
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