Editing Clam shrimp (section)

{{Short description|Suborder of arthropods}}
{{Automatic taxobox
| name = Clam shrimp
| fossil_range = {{fossil range|Devonian|Recent}}
| image = California Clam Shrimp (Cyzicus californicus).jpg
| image_caption = California clam shrimp, ''Cyzicus californicus''
| taxon = Diplostraca
| subdivision_ranks = Orders of clam shrimp
| subdivision =
* Cyclestherida <small>Sars, 1899</small>
* Laevicaudata <small>Linder, 1945</small>
* Spinicaudata <small>Linder, 1945</small>
}}

'''Clam shrimp''' are a group of bivalved [[branchiopod]] [[crustacean]]s that resemble the unrelated [[Bivalvia|bivalved molluscs]].<ref name=Webb1979/> They are extant and also known from the fossil record, from at least the Devonian period and perhaps before.<ref name=Woolfe1990/> They were originally classified in the former [[order (biology)|order]] '''Conchostraca''', which later proved to be [[paraphyly|paraphyletic]], because [[Diplostraca|water fleas]] are nested within clam shrimps. Clam shrimp are now divided into three orders, '''Cyclestherida''', '''Laevicaudata''', and '''Spinicaudata''', in addition to the fossil family Leaiidae.<ref name=VanDamme2016/><ref name=worms/>