Longamoebia Cavalier-Smith and Smirnov 2011
Flattened, elongated cell with pointed subpseudopodia and centrosomes in one lineage.
1.0. Dermamoebida Cavalier-Smith 2004
Oblong, lancet-shaped or irregularly triangular in locomotion; with smooth cell surface or with few wide ridges, never wrinkled; short, wide triangular pseudopodia and in some genera subpseudopodia of dactylopodial type; thick cell coat, multilayered or consisting of tightly packed helical structures.
1.1. Mayorellidae Schaeffer 1926, emend. Smirnov et al. 2011
Flattened amoebae producing short conical pseudopodia. Cell coat a thick, multilayered “cuticle”.
1.1.1. Mayorella Schaeffer 1926
Mayorella viridis Leidy 1902
Mayorella viridis infected by a parasite.
Mayorella penardi Page 1972 infected by the fungal parasite Amoebophilus simplex Barron 1983.
Mayorella viridis glycocalyx
2.0. Centramoebida Rogerson and Patterson 2002, emend. Cavalier-Smith 2004
Flattened with prominent subpseudopodia, flexible and tapering to a fine tip and sometimes furcated near their base (acanthopodia); without adhesive uroid; one species in culture appears as a branched, flattened sheet without subpseudopodia; at least one species sporocarpic and protosteloid.
2.1. Acanthamoebidae Sawyer and Griffin 1975
2.1.1. Acanthamoeba Volkonsky 1931
Acanthamoeba sp. Volkonsky 1931
3.0. Thecamoebida Schaeffer 1926, emend. Cavalier-Smith 2004
Oblong, flattened cell with dorsal folds and/or ridges; anterior hyaloplasm forms antero-lateral crescent and never occupies half or more of the body length; never produce discrete pseudopodia or subpseudopodia; cell coat relatively thin, amorphous or with extra structures based on amorphous layer.
Thecamoeba terricola (Greeff,1866) Lepsi, 1960
Thecamoeba similis (Greeff, 1891) Lepsi, 1960
Thecamoeba striata (Penard, 1890) Schaeffer, 1926