Arcella rota Daday, 1905
Diagnosis: Test in dorsal view circular with numerous, 38-40, small spines, giving the impression of a gear. These spines are curved, pointing downwards. Test in side view flat, height about ¼ of the diameter.
Ecology: Freshwater, Paraguay.
Microcorycia spec. , folded Microcorycia spec.? I found this specimen in a sample from moss on a fallen tree in a marsh in the Naardermeer,
Microchlamys spec., the same cell in lateral view Microchlamys spec. Diagnosis: Shell relatively high compared with all described species. The diameter is twice the height.
Infraorder Excentrostoma Kosakyan et al., 2016 Diagnosis: Testate amoebae with an eccentrically placed aperture; test organic with few or many xenosomes. Family Centropyxidae Jung, 1942
Infraorder Longithecina Kosakyan et al., 2016 Diagnosis: Testate amoebae with a more or less tubular or cylindrical test and a terminal aperture; test with