{{Short description|Order of roundworms}} {{Automatic_taxobox | image = Pristionchus pacificus g001 (1).jpg | image_caption = Diplogastridae ''Pristionchus pacificus'' | taxon = Diplogasterida | authority = Maggenti, 1982 | subdivision_ranks = Families | subdivision = * Cylindrocorporidae * Diplogastridae * Diplogasteroididae * Odontopharyngidae }} '''Diplogasterida''' was an order of nematodes. It was sometimes placed in a monotypic subclass '''Diplogasteria''', but molecular phylogenetic evidence has shown it to be embedded in the family Rhabditidae (formerly Rhabditina). The confusion of having a hierarchical nesting of groups that were formerly mutually exclusive has led to a profusion of names. Although completely revised taxonomy of nematodes that builds on recent classification systems<ref name="DeLey_Blaxter2002">{{Cite journal | last1 = De Ley | first1 = P. | last2 = Blaxter | first2 = M. | year = 2002 | title = Systematic position and phylogeny. In Lee, D.L., Ed. | journal = The Biology of Nematodes}}</ref><ref name="Hodda2007">{{Cite journal | last1 = Hodda | first1 = M. | year = 2007 | title = Phylum Nematoda | journal = Zootaxa | volume = 1668 | pages = 265–293| doi = 10.11646/zootaxa.1668.1.14 }}</ref> as well as recent phylogenetic evidence<ref name="vanMegen2015">{{Cite journal | doi = 10.1163/156854109X456862 | last1 = ven Megen | first1 = H. | year = 2009 | title = A phylogenetic tree of nematodes based on about 1200 full-length small subunit ribosomal DNA sequences | journal = Nematology | volume = 11 | issue = 6 | pages = 927–950|display-authors=etal}}</ref><ref name="Susoy2015">{{Cite journal | doi = 10.7554/eLife.05463 | last1 = Susoy | first1 = V. | last2 = Ragsdale | first2 = E.J. | last3 = Kanzaki | first3 = N. | last4 = Sommer | first4 = R.J. | year = 2015 | title = Rapid diversification associated with a macroevolutionary pulse of developmental plasticity | journal = eLife | volume = 4 | article-number = e05463 | pmid = 25650739 | pmc=4357287 | doi-access = free }}</ref> is still necessary, most contemporary taxonomic studies now treat all groups listed under "Diplogasterina" below as a single family, Diplogastridae.
==Subdivisions== *Suborder Chambersiellina Hodda 2007 **Superfamily Chambersielloidea Thorne 1937 ***Family Chambersiellidae Thorne 1937 (Sanwal 1957) *Suborder Diplogasterina Paramonov 1952 **Superfamily Cylindrocorporoidea T. Goodey 1939 ***Family Cylindrocorporidae T. Goodey 1939 ***Family Odontopharyngidae Micoletzky 1922 **Superfamily Diplogasteroidea Micoletzky 1922 ***Family Cephalobiidae Travassos & Kloss 1960a ***Family Diplogasteridae Micoletzky 1922 ***Family Diplogasteroididae Paramonov 1952 ***Family Neodiplogasteridae Paramonov 1952 ***Family Pseudodiplogasteroididae De Ley & Blaxter 2002 ***Family Tylopharyngidae Filipjev 1918 *Suborder Myolaimina Inglis 1983 **Superfamily Carabonematoidea Stammer & Wachek 1952 ***Family Carabonematidae Stammer & Wachek 1952 **Superfamily Myolaimoidea Goodey 1963 ***Family Myolaimidae Goodey 1963
== References == {{Reflist}} * {{aut|Tree of Life Web Project (ToL)}} (2002): [http://tolweb.org/Nematoda/2472/2002.01.01 Nematoda]. Version of 2002-JAN-01. Retrieved 2008-NOV-02.
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Category:Diplogasteria Category:Nematode orders Category:Rhabditidae
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