Editing Mysida (section)

==Systematics==
The Mysida belong to the superorder Peracarida, which means "near to shrimps". Although in many respects mysids appear similar to some shrimps, the main characteristic separating them from the superorder [[Eucarida]] is their lack of free-swimming [[crustacean larvae|larvae]].<ref name="Mauchline">{{cite book |author=Mauchline, J. |year=1980 |title=The Biology of Mysids and Euphausiids |editor1=Blaxter, J. H. S. |editor2=Russell, F. S. |editor2-link=Russell, F. S. |editor3=Yonge, M. |series=Advances in Marine Biology: Volume 18 |publisher=[[Academic Press]] |isbn=978-0-08-057941-2 }}</ref> The order Mysida is extensive and currently includes approximately 160 [[genus|genera]], containing more than 1000 species.<ref name="Meland">{{cite web |author=Meland, Kenneth |url=http://crustacea.net/crustace/mysidacea/index.htm |title=Mysidacea: Families, Subfamilies and Tribes |date=October 2, 2000 |publisher=[[Australian Museum]] |access-date=2010-09-07}}</ref>

Traditionally, Mysida were united with another, externally similar group of pelagic crustaceans, the [[Lophogastrida]], into a broader order [[Mysidacea]], but that classification is generally abandoned at present.<ref name=WoRMS/><ref name=Brusca>Brusca, R.; Brusca, G. (2003). Invertebrates. Sunderland, Massachusetts: Sinauer Associates</ref><ref>{{cite book |url=http://atiniui.nhm.org/pdfs/3839/3839.pdf |title=An Updated Classification of the Recent Crustacea |author1=Martin, Joel W. |author2=Davis, George E. |year=2001 |publisher=[[Natural History Museum of Los Angeles County]] |access-date=2010-11-03 |archive-date=2011-07-11 |archive-url=https://web.archive.org/web/20110711181351/http://atiniui.nhm.org/pdfs/3839/3839.pdf |url-status=dead }}</ref><ref>[http://www.tafi.org.au/zooplankton/imagekey/malacostraca/peracarida/ Peracarida fact sheet - Guide to the marine zooplankton of south eastern Australia] {{webarchive|url=https://web.archive.org/web/20111004050244/http://www.tafi.org.au/zooplankton/imagekey/malacostraca/peracarida/ |date=2011-10-04 }}</ref><ref name=Anderson>Anderson, Gary (2010-01-20): [http://peracarida.usm.edu/iwp_home.html  Peracarida Taxa and Literature (Cumacea, Lophogastrida, Mysida, Stygiomysida and Tanaidacea)] {{webarchive|url=https://web.archive.org/web/20100124195537/http://peracarida.usm.edu/iwp_home.html |date=2010-01-24 }}</ref>
While the previous grouping had good [[morphology (biology)|morphological]] support, [[molecular systematics|molecular studies]] do not corroborate the [[monophyly]] of this group.<ref name=Mel>{{cite journal |author1=Meland, K. |author2=Willassen, E. |year=2007 |url=http://decapoda.nhm.org/pdfs/31293/31293.pdf |title=The disunity of "Mysidacea" (Crustacea) |journal=[[Molecular Phylogenetics and Evolution]] |volume=44 |issue=3 |pages=1083–1104 |pmid=17398121 |doi=10.1016/j.ympev.2007.02.009}}</ref> Previously Mysida included two other families, [[Lepidomysidae]] and [[Stygiomysidae]], but these have now been placed in a separate order, [[Stygiomysida]].<ref name=Mel/>