平足目（學名：Elasipodida）為海參綱的一個目。[1]
下級分類
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
- 科的地位未定的屬：
- 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
參考文獻
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