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Genus Awerintzewia

Shell is ovoid, circular or slightly compressed in cross section; covered with irregular, embedded siliceous particles (no idiosomes of other testate amoebae). Aperture is oval, with internally thickened border. Ecology: freshwater, Sphagnum. Monospecific. Type species: Awe-rintzewia cyclostoma (Penard, 1902)