Dainellidae Cozar & Vachard 2001

Family DAINELLIDAE Cózar & Vachard, 2001 Tests medium-sized to large, nautiloid, with permanent strong deviations of axis, involute to rarely evolute. Chambers numerous, subquadratic, and not sutured. Wall simple dark, bilayered with tectum or coarsely granular. Pseudochomata, chomata or arches as secondary deposits. Aperture terminal, simple and basal. Late early Tournaisian-late Serpukhovian. Composition: Dainella Brazhnikova, 1962; Bessiella Conil & Hance in Groessens et al., 1982; Lysella Bozorgnia, 1973; Paralysella Cózar & Vachard, 2001; Praedainella Hance, Hou & Vachard, 2011; Pseudodainella Wu in Wu & Liao, 2001; Vissarionovella Cózar & Vachard, 2001.