平足目

平足目（学名：Elasipodida）为海参纲的一个目。^[1]

平足目
Enypniastes sp.
科学分类
界：	动物界 Animalia
门：	棘皮动物门 Echinodermata
纲：	海参纲 Holothuroidea
目：	平足目 Elasipodida Théel, 1882
属
见正文

下级分类

本目包括以下科：^[2]

• Elpidiidae Théel, 1882
  • Achlyonice Théel, 1879
  • Amperima Pawson, 1965
  • Ellipinion Hérouard, 1923
  • Elpidia Théel, 1876
  • Irpa Danielssen & Koren, 1878
  • Kolga Danielssen & Koren, 1879
  • Peniagone Théel, 1882
  • Penilpidia Gebruk, 1988
  • Protelpidia Gebruk, 1983
  • Psychrelpidia Hérouard, 1923
  • Psychroplanes Gebruk, 1988
  • Rhipidothuria Hérouard, 1901
  • Scotoannassa
  • Scotoplanes Théel, 1882
• Laetmogonidae Ekman, 1926
• †Palaeolaetmogonidae Reich, 2012
• Pelagothuriidae Ludwig, 1893
• Psychropotidae
• Psychroptidae

科的地位未定的属：

• Mercedescaudina Schallreuter, 1975
• Microantyx Kornicker & Imbrie, 1958
• Oneirophanites
• Oneirophantites Cherbonnier, 1976
• Palelpidia Mostler, 1968
• Praecaudina
• Praeeuphronides Mostler, 1968
• Tetravirga Frizzell & Exline, 1955
• Uncinulina Terquem, 1862

• 
  The only true pelagic echinoderm known to date : Pelagothuria natatrix (here close to the Galapagos).
• 
  Benthodytes sp.
• 
  Scotoplanes globosa (a.k.a. "sea pig", family Elpidiidae)
• 
  A Pelagothuriidae
• 
  A Psychropotidae

参考文献

1. Mah, Christopher. Deep-Sea Swimming Sea Cucumbers and the "most bizarre holothurian species in existence"!. The Echinoblog. September 18, 2012. （原始内容存档于2017-10-16）.
2. WoRMS - World Register of Marine Species - Elasipodida. www.marinespecies.org. [2021-07-16]. （原始内容存档于2021-12-22）.

• Barnes, Robert D. Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. 1982: 995. ISBN 0-03-056747-5.
• Mah, Christopher. Deep-Sea Swimming Sea Cucumbers and the "most bizarre holothurian species in existence"!. The Echinoblog. September 18, 2012. （原始内容存档于2017-10-16）.