Class Discosea Cavalier-Smith, 2004 em. Smirnov et al., 2011

Diagnosis: Flattened naked amoebae, never producing tubular, subcylindrical pseudopodia and never altering the locomotive form. Cytoplasmic flow polyaxial or without a pronounced axis. No flagellate stage in the life cycle; subpseudopodia, if present, short, never both pointed and branched.

1. Order Glycostylida Cavalier-Smith in Cavalier-Smith et al., 2004 em.
   1. Suborder Vannellina Smirnov et al. (2005) 
      1. Family Vannellidae Bovee, 1979
         Vannella 
         Clydonella 
         Lingulamoeba 
         Ripella 
         Paravannella 
         Pessonella
   2. Suborder Dactylopodina Smirnov et al. (2005) 
      1. Family Paramoebidae Poche, 1913 em. Kudryavtsev et al., 2011, 2015
         Paramoeba
         Cunea
         Pseudoparamoeba
         Janickina
         Korotnevella
      2. Family Vexilliferidae Page, 1987
         Vexillifera
   3. Suborder Stygamoebina Smirnov and Cavalier-Smith in Smirnov et al., 2011
      1. Family Stygamoebidae Smirnov and Cavalier-Smith in Smirnov et al., 2011
         Stygamoeba
         Vermistella
          
2. Order Dermamoebida Cavalier-Smith in Cavalier-Smith et al., 2004 em. Smirnov et al., 2011
   1. Family Dermamoebidae Cavalier-Smith and Smirnov in Smirnov et al., 2011
      Dermamoeba
      Paradermamoeba
   2. Family Mayorellidae Schaeffer, 1926
      Mayorella
       
3. Order Thecamoebida Smirnov and Cavalier-Smith in Smirnov et al., 2011
   1. Family Thecamoebidae Schaeffer, 1926, em. Smirnov et al., 2011
      Thecamoeba
      Pseudothecamoeba
      Thecochaos
   2. Family Stenamoebidae Cavalier-Smith, 2016
      Sappinia
      Stenamoeba
       
4. Order Centramoebida Rogerson and Patterson, 2002
   1. Family Acanthamoebidae Sawyer and Griffin, 1975
      Acanthamoeba
      Protacanthamoeba
      Luapeleamoeba
      Dracoamoeba
      Vacuolamoeba
   2. Family Balamuthiidae Cavalier-Smith in Cavalier-Smith et al., 2004
      Balamuthia
       
5. Order Himatismenida Page, 1987
   1. Suborder Tectiferina Cavalier-Smith and Smirnov in Smirnov et al., 2011
      1. Family Cochliopodiidae De Saedeleer, 1934
         Cochliopodium
         Coenopodium
         Ovalopodium
   2. Suborder Pellitina Smirnov and Cavalier-Smith in Smirnov et al., 2011, Cavalier-Smith, 2016 Diagnosis as for Pellitida em. in Kudryavtsev et al., 2014, p. 226
      1. Family Pellitidae Smirnov and Kudryavtsev, 2005
         Pellita
      2. Family Goceviidae Cavalier-Smith and Smirnov in Smirnov et al., 2011 em. Kudryavtsev et al., 2014
         Gocevia
         Paragocevia
         Endostelium
   3. Suborder Parvamoebina Cavalier-Smith and Smirnov in Smirnov et al., 2011
      1. Family Parvamoebidae Cavalier-Smith and Smirnov in Smirnov et al., 2011
         Parvamoeba

          

          

          

The diagrams below show morphotypes of locomotive forms of Discosea:

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