Order Echinamoebida (Cavalier-Smith, 2004) Smirnov et al, 2011
Diagnosis: Flattened limax amoebae with or without spine-like subpseudopodia; if spiny subpseudopodia absent, length/breadth ratio >6.
Two families:
Family Echinamoebidae Page, 1975 em. Cavalier-Smith and Smirnov 2011
Echinamoeba
Micriamoeba
Family Vermamoebidae Cavalier-Smith and Smirnov 2011
Vermamoeba
Arcella marginata, after Deflandre, 1929 Arcella marginata Daday, 1905 Diagnosis: Shell roughly hemispherical, rather overhanging, with a flattened, smooth edge. In dorsal view showing a
Arcella lobostoma, after Deflandre, 1929 Arcella lobostoma Deflandre, 1929 Diagnosis: Shell hemispherical. In ventral view, irregular circular outline, often a little elliptical; pseudostome irregularly lobed:
Pelomyxa palustris Pelomyxa palustris, found below decaying leaves in the hollow of a beech Pelomyxa palustris, found below decaying leaves in the hollow of a
H. galeata – from Stepanek, 1963 Hoogenraadia galeata (Stepanek, 1963) n. comb. Gillardella galeata Stepanek, 1963 Diagnosis: Shell somewhat similar to the shell of Corythion dubium
Arcella grospietschi, after Stepanek, 1963 Arcella grospietschi Stepanek, 1963 Diagnosis: Shell disc-shaped, yellow-brown, in ventral view with a undulated border, with seven large and seven smaller
Arcella oyei, after Stepanek, 1963 Arcella oyei Stepanek, 1963 Diagnosis: In dorsal view, the shell is circular, with 10 apparent broken lobes on the surface. In