Imbricatea Cavalier-Smith 2011
Test with secreted surface silica scales; tubular mitochondrial cristae; pseudopodia conical, pointed, clearly ectoplasmatic, sometimes branched and may anastomose.
Arcella marginata
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