What is Remipedia?
{{Taxobox | fossil_range = [[Pennsylvanian]] to Recent | image = Speleonectes tanumekes unlabeled.png | image_caption = ''Speleonectes tanumekes'' | name = Remipedia | regnum = [[Animal]]ia | phylum = [[Arthropod]]a | subphylum = [[Crustacean|Crustacea]] | classis = '''Remipedia''' | classis_authority = J. Yager, 1981 | subdivision_ranks = Orders & families | subdivision = }} '''Remipedia''' is a [[Class (biology)|class]] of blind [[crustacean]]s. They live in coastal [[aquifer]]s. So long as the water is [[saline|salty]], these little animals can be found. They are found in almost every [[ocean]] basin, including in [[Australia]], the [[Caribbean Sea]], the [[Atlantic Ocean]]. They live in [[subtropical]] waters.<ref>{{cite journal |author=Stefan Koenemann | display-authors = etal|year=2007 |title=Phylogenetic analysis of Remipedia (Crustacea) |journal=Organisms, Diversity & Evolution |volume=7 |issue=1 |pages=33–51 |doi=10.1016/j.ode.2006.07.001}}</ref> The first described remipede was a [[fossil]] called ''Tesnusocaris goldichi'' (early [[Pennsylvanian]]). Since 1979 at least 17 living species have been identified. Genetic studies suggest that remipedes are the [[arthropods]] most closely related to [[insect]]s.<ref>[https://www.sciencedaily.com/releases/2010/02/100216114034.htm Where did insects come from? New study establishes relationships among all arthropods]</ref> == Anatomy == Remipedes are {{convert|10|-|40|mm|in|1}} long. They have a head and a long trunk of up to forty-two similar body [[Segmentation|segments]].<ref>{{cite web |url=http://cameronmccormick.blogspot.com/2008/11/remipedia.html |title=Remipedia |work=The Lord Geekington |author=Cameron McCormick |date= 2008}}</ref> The swimming [[appendage]]s are on the sides of each segment, and the animals swim on their backs. They are generally slow-moving. They have fangs connected to secretory [[gland]]s. It is not known whether these glands secrete digestive juices or poisonous [[Venom (poison)|venom]]. They have a primitive body plan in cr