Genus Microquadrula Golemansky, 1968
Diagnosis: Shell ovoid, hyaline and transparent, narrowed in its anterior portion; pseudostome circular, obliquely truncated. In ventral view it resembles Corythion. Covered with square or rectangular siliceous plates, in appearance identical to that of the genus Quadrulella.
The genus Microquadrula differs from the genus Paraquadrula by its general shape, its circular cross section, its circular and obliquely placed pseudostome and the siliceous nature of its platelets. Monospecific.
Ecology: humid moss on rocks, fresh water (Cuba)