Paulinellidae De Saedeleer 1934, emend. Adl et al. 2012
Diagnosis: Test pyriform, uncompressed; scales, when present, long, with length perpendicular to aperture. At least two genera (Ovulina, Micropyxidiella ) with totally organic tests without silica scales.
Quadrulella tubulata, after Gauthier-Lièvre, 1953 Quadrulella tubulata Gauthier-Lièvre, 1953 Diagnosis: Shell almost lageniform, compressed, with rounded fundus and more or less irregularly arranged, commonly small,
Quadrulella scutellata, after Wailes, 1912 Quadrulella scutellata Wailes, 1912 Diagnosis: Test moderately large, hyaline, pyriform, compressed; composed of small siliceous, rectangular plates arranged in irregular