Ascaridina

Ascaridina
	Adult Toxocara canis; (Ascaridoidea: Toxocaridae)
Scientific classification
Kingdom:	Animalia
Phylum:	Nematoda
Class:	Secernentea
Subclass:	Spiruria
Order:	Ascaridida
Suborder:	Ascaridina
Superfamilies
	5, see text

The suborder Ascaridina contains the bulk of the Ascaridida, parasitic roundworms with three "lips" on the anterior end. The Ascaridida were formerly placed in the subclass Rhabditia by some, but morphological and DNA sequence data rather unequivocally assigns them to the Spiruria. The Oxyurida and Rhigonematida are occasionally placed in the Ascaridina as superfamily Oxyuroidea, but while they seem indeed to be Spiruria, they are not as close to Ascaris as such a treatment would place them.[1]

These "worms" contain a number of important parasites of humans and domestic animals, namely in the superfamily Ascaridoidea.

Systematics

The Ascaridina contain the following superfamilies and families:[2]

Superfamily Ascaridoidea

Acanthocheilidae
Anisakidae
Ascarididae
Crossophoridae
Goeziidae
Raphidascarididae (disputed)
Toxocaridae

Superfamily Cosmocercoidea

Superfamily Heterakoidea

Ascaridiidae
Aspidoderidae (disputed)
Heterakidae

Superfamily Seuratoidea

Chitwoodchabaudiidae (disputed)
Cucullanidae
Quimperiidae
Schneidernematidae
Seuratidae

Superfamily Subuluroidea

Maupasinidae
Subuluridae

Footnotes

ToL (2002)
ToL (2002), SN2K (2008)

References

Systema Naturae 2000 (SN2K) (2008): Suborder Ascaridina. Version of 2008-AUG-14. Retrieved 2008-NOV-05.
Tree of Life Web Project (ToL) (2002): Nematoda. Version of 2002-JAN-01. Retrieved 2008-NOV-02.

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[1] ToL (2002)

[2] ToL (2002), SN2K (2008)