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Gammaridea is one of the suborders of the order Amphipoda, comprising small, shrimp-like crustaceans. Until recently, in a traditional classification, it encompassed about 7,275 (92%) of the 7,900 species of amphipods described by then, in approximately 1,000 genera, divided among around 125 families. That concept of Gammaridea included almost all freshwater amphipods, while most of the members still were marine. The group is however considered paraphyletic, and is under deconstruction by the amphpod taxonomists J. Lowry and A. Myers. In 2003 they moved several families from Gammaridea to join members of the former Caprellidea in a new suborder Corophiidea.〔 A. A. Myers & J. K. Lowry (2003). "A phylogeny and a new classification of the Corophiidea Leach, 1814 (Amphipoda)". Journal of Crustacean Biology 23 (2): 443–485. doi:10.1651/0278-0372〕 Further, in 2013 another large suborder Senticaudata was established, which now encompasses much of the original Gammaridea, particularly its freshwater families, and into which also the Corophiidea was merged.〔 Lowry, J.K. & Myers, A.A. (2013) (A Phylogeny and Classification of the Senticaudata subord. nov. (Crustacea: Amphipoda) ). Zootaxa 3610 (1): 1-80.〕〔(Senticaudata ) WoRMS〕 The remaining Gammaridea encompasses 85 families and about 4,000 of the ca. 9,550 amphipod species recognized in 2014.〔(World Amphipoda Database: Introduction ) (accessed 26 April 2014)〕〔 De Broyer, C. (2014) (Gammaridea ) WoRMS〕 The family Gammaridae does not belong to Gammaridea in this new system. ==Families== This list comprises those families that remain in the suborder Gammaridea after the separation of the Senticaudata, as listed in WoRMS (April 2014):〔 *Superfamily Eusiroidea Bousfield, 1979 * *Eusiridae Stebbing, 1888 *Superfamily Liljeborgioidea Stebbing, 1899 * *Liljeborgiidae Stebbing, 1899 *Superfamily Lysianassoidea Dana, 1849 * *Acidostomatidae Stoddart & Lowry, 2012 * *Amaryllididae Lowry & Stoddart, 2002 * *Aristiidae Lowry & Stoddart, 1997 * *Cebocaridae Lowry & Stoddart, 2011 * *Cyclocaridae Lowry & Stoddart, 2011 * *Cyphocarididae Lowry & Stoddart, 1997 * *Endevouridae Lowry & Stoddart, 1997 * *Eurytheneidae Stoddart & Lowry, 2004 * *Hirondelleidae Lowry & Stoddart, 2010 * *Izinkalidae Lowry & Stoddart, 2010 * *Kergueleniidae Lowry & Stoddart, 2010 * *Lepidepecreellidae Stoddart & Lowry, 2010 * *Lysianassidae Dana, 1849 * *Opisidae Lowry & Stoddart, 1995 * *Pachynidae Lowry & Stoddart, 2012 * *Podoprionidae Lowry & Stoddart, 1996 * *Scopelocheiridae Lowry & Stoddart, 1997 * *Sophrosynidae Lowry & Stoddart, 2010 * *Thoriellidae Lowry & Stoddart, 2011 * *Trischizostomatidae Lilljeborg, 1865 * *Uristidae Hurley, 1963 * *Wandinidae Lowry & Stoddart, 1990 * *Lysianassoidea incertae sedis *Superfamily Pontoporeioidea Dana, 1853 * *Pontoporeiidae Dana, 1853 * *Priscillinidae d'Udekem d'Acoz, 2006 *Families not attributed to superfamilies: * *Acanthonotozomatidae Stebbing, 1906 * *Acanthonotozomellidae Coleman & Barnard, 1991 * *Alicellidae Lowry & De Broyer, 2008 * *Amathillopsidae Pirlot, 1934 * *Ampeliscidae Krøyer, 1842 * *Amphilochidae Boeck, 1871 * *Argissidae Walker, 1904 * *Astyridae Pirlot, 1934 * *Atylidae Lilljeborg, 1865 * *Bateidae Stebbing, 1906 * *Bolttsiidae Barnard & Karaman, 1987 * *Cheidae Thurston, 1982 * *Cheluridae Allman, 1847 * *Colomastigidae Stebbing, 1899 * *Condukiidae Barnard & Drummond, 1982 * *Cressidae Stebbing, 1899 * *Cyproideidae J.L. Barnard, 1974 * *Dexaminidae Leach, 1814 * *Didymocheliidae Bellan-Santini & Ledoyer, 1987 * *Dikwidae Coleman & Barnard, 1991 * *Epimeriidae Boeck, 1871 * *Exoedicerotidae Barnard & Drummond, 1982 * *Haustoriidae Stebbing, 1906 * *Hyperiopsidae Bovallius, 1886 * *Ipanemidae Barnard & Thomas, 1988 * *Iphimediidae Boeck, 1871 * *Lafystiidae Sars, 1893 * *Laphystiopsidae Stebbing, 1899 * *Lepechinellidae Schellenberg, 1926 * *Leucothoidae Dana, 1852 * *Maxillipiidae Ledoyer, 1973 * *Megaluropidae Thomas & Barnard, 1986 * *Melphidippidae Stebbing, 1899 * *Miramarassidae Lowry, 2006 * *Nihotungidae J.L. Barnard, 1972 * *Ochlesidae Stebbing, 1910 * *Oedicerotidae Lilljeborg, 1865 * *Pagetinidae K.H. Barnard, 1931 * *Paracalliopiidae Barnard & Karaman, 1982 * *Pardaliscidae Boeck, 1871 * *Phoxocephalidae Sars, 1891 * *Phoxocephalopsidae Barnard & Drummond, 1982 * *Platyischnopidae Barnard & Drummond, 1979 * *Pleustidae Buchholz, 1874 * *Podosiridae Lowry & Myers, 2012 * *Pseudamphilochidae Schellenberg, 1931 * *Sebidae Walker, 1908 * *Sicafodiidae Just, 2004 * *Stegocephalidae Dana, 1855 * *Stenothoidae Boeck, 1871 * *Stilipedidae Holmes, 1908 * *Synopiidae Dana, 1853 * *Thurstonellidae Lowry & Zeidler, 2008 * *Urohaustoriidae Barnard & Drummond, 1982 * *Urothoidae Bousfield, 1978 * *Valettiidae Stebbing, 1888 * *Valettiopsidae Lowry & De Broyer, 2008 * *Vicmusiidae Just, 1990 * *Vitjazianidae Birstein & M. Vinogradov, 1955 * *Zobrachoidae Barnard & Drummond, 1982 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「gammaridea」の詳細全文を読む スポンサード リンク
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