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The Diplostraca or Cladocera, commonly known as water fleas, are a superorder of small crustaceans that feed on microscopic chunks of organic matter (excluding some predatory forms). Over 1000 species have been recognised so far, with many more undescribed. The oldest fossils of diplostracans date to the Jurassic, though their modern morphology suggests that they originated substantially earlier, during the Paleozoic. Some have also adapted to a life in the ocean, the only members of Branchiopoda to do so, even if several anostracans live in hypersaline lakes. Most are 0.2–6.0 mm (0.01–0.24 in) long, with a down-turned head with a single median compound eye, and a carapace covering the apparently unsegmented thorax and abdomen. Most species show cyclical parthenogenesis, where asexual repr

AttributesValues
rdfs:label
  • Diplostraca (en)
  • مضاعفات الدرقة (ar)
  • Diplostracis (ca)
  • Diplostraca (es)
  • Diplostraca (fr)
  • Diplostraca (nl)
  • Diplostraca (sv)
  • 雙甲下綱 (zh)
rdfs:comment
  • مضاعفات الدرقة (الاسم العلمي: Diplostraca) هي رتبة من المفصليات تتبع صنف ورقيات الأرجل من طائفة غلصميات الأرجل. (ar)
  • Els diplostracis (Diplostraca) són un ordre de crustacis branquiòpodes caracteritzats per presentar una closca de dues valves, que recorda a la conquilla dels bivalves. Comprèn 1.187espècies. (ca)
  • Los diplostráceos (Diplostraca) son un orden de crustáceos branquiópodos caracterizados por presentar un caparazón de dos valvas, que recuerda a la concha de los bivalvos. Comprende más de 600 especies.​ (es)
  • Les Diplostracés (en latin : Diplostraca) constituent un ordre de crustacés de la classe des Branchiopoda. (fr)
  • Diplostraca zijn een superorde van de kreeftachtigen. De naam komt van het Griekse διπλόος, diploos (= tweevoudig) en ὄστρακον, óstrakon (= scherf) en duidt op het bezit van een rugschild dat lijkt op de dubbele schaal van tweekleppigen. Er zijn 605 soorten bekend. (nl)
  • Diplostraca är en ordning av kräftdjur. Diplostraca ingår i klassen bladfotingar, fylumet leddjur och riket djur. Enligt Catalogue of Life omfattar ordningen Diplostraca 319 arter. Kladogram enligt Catalogue of Life och Dyntaxa: (sv)
  • 雙甲下綱(学名:Diplostraca),舊作双甲目,原为甲殼亞門鳃足纲葉足亞綱的一个目,今被升格為一個下綱級的生物分類。在WoRMS,本分類被列為鰓足綱之下的一個總目。這些細小的甲殼動物除卻某幾個捕食性物種以外,皆以微細的有機物質為食。 現時本分類包括的已辨識物种估算從約600個到過千個已辨識的物種,但連同的數量不止這個數。本分類現時已知最古老的化石來自於侏罗纪,但其現代物種的型態暗示牠們早在古生代就已出現。這些物種主要棲息於淡水環境,但部分物種已經適應了在海洋的生活。這些物種均屬於鰓足綱,而且某些無甲目的物種更在高鹽湖泊裡存活下來。這些物種的體長一般介乎0.2-6.0 mm(0.01-0.24英寸),頭部朝下,中央有一顆複眼,覆蓋幾乎所有沒有節的喉部和腹部。 本分類單元的物種存在於各種水體,包括:淡水、鹹淡水交界及海洋,但不存在於陸地。 (zh)
  • The Diplostraca or Cladocera, commonly known as water fleas, are a superorder of small crustaceans that feed on microscopic chunks of organic matter (excluding some predatory forms). Over 1000 species have been recognised so far, with many more undescribed. The oldest fossils of diplostracans date to the Jurassic, though their modern morphology suggests that they originated substantially earlier, during the Paleozoic. Some have also adapted to a life in the ocean, the only members of Branchiopoda to do so, even if several anostracans live in hypersaline lakes. Most are 0.2–6.0 mm (0.01–0.24 in) long, with a down-turned head with a single median compound eye, and a carapace covering the apparently unsegmented thorax and abdomen. Most species show cyclical parthenogenesis, where asexual repr (en)
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