Genus Cornuapyxis Coûteaux & Chardez, 1981
Diagnosis: Form similar to Cyclopyxis but aperture crescent-shaped. Shell hemispherical in lateral view, ventral sole weakly invaginated, smooth, dorsal surface covered with small mineral grains.
Ecology: From mosses and soil, tropical rain forests, French Guyana.
Monospecific. Ref. Coûteaux and Chardez (1981).
Type species: Cornuapyxis Iunaristoma Coûteaux & Chardez, 1981.
Difflugia levanderi , after Playfair, 1918 Difflugia levanderi Playfair, 1918 Diagnosis: Test lance-oblong or mitriform (shaped like a bishop’s miter), short and broad, fundus shaped
D. angelica after Gauthier-Lièvre et Thomas, 1960 Difflugia angelica Gauthier-Lièvre et Thomas, 1960 Diagnosis: Test spherical, slightly mammillated. Pseudostome regularly lobed like a star with
fgdfgdfgfgfgfg fgdfgfd fg dfgfd gfdg fdg C. lunaristoma – from Coûteaux et Chardez, 1981 fdgdfgdfgfdgfgdfgfgf fgdgfdgfd gfdg dfgdf C. lunaristoma – from Coûteaux et Chardez,
F. bipilata, Croatia, Tamnica Frenopyxis bipilata (Baković, Siemensma, Baković and Rubinić, 2019) comb. n. Diagnosis: In dorsal view, the test is rounded and usually slightly wider
D. terrestris, after Berney et al., 2015 Darbyshirella terrestris Berney, Bass & Geisen, 2015 Diagnosis: Non-marine, with morphological characteristics of the genus. Usually above 600 um
A. elenazhivotovae – from Leonov, 2010 Acanthocystis elenazhivotovae Leonov, 2010 Diagnosis: Cell diameter 22-25 µm. Periplast with tangential plate-scales and radial spine-scales. Spine-scales 3.2-6.0 µm,