Aperture usually surrounded by pores. Aperture diameter 0.45 of shell diameter. Shell diameter 180 µm.
Aperture surrounded by pores. Aperture diameter ≥ 0.4 of shell diameter. Shell very flat; diameter 180 µm.
Shell elliptical, quadrate or circular. Shell often with distinct dorsal folds or ribs. Aperture small and with pores.
Shell with a number of projections.
Shell with six or more ribs; dorsal surface with ribs and depressions; aperture smooth, without crenulations.
Shell in side view trapezoid, with six or more ribs; aperture smooth without crenulations.
Shell with basal border. Dorsal surface with depressions. Diameter c. 80-110 µm.
Shell with basal border. Dorsal surface with depressions. Diameter c. 80 µm.
Shell hemispherical, with acute or somewhat rounded corners in lateral view. Shell sometimes with basal border. Diameter c. 35-55 µm.
Shell hemispherical, with smooth and broad rounded corners in lateral view.
Shell with distinct basal border. Ratio diameter aperture/shell 0.2.
Shell dome shaped; aperture with irregular crenulated border.
Shell formed like a saddle. Aperture elliptical.
Shell resembling a pie; prominent folds or ribs often with darker color.
Test broader than high; heigth c. 80-90 µm.
Shell with striated border
Shell border with numerous small spines.
Shell with undulations, more or less spherical.
Shell shaped like an old hat.
Shell crowned with some spines.
Shell with high dome and distinct neck.
Shell like Gandalf’s hat.
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