SCHUBERTELLIDAE Skinner, 1931

Vachard, Daniel & Le Coze, Francois, 2024, Paleozoic Foraminifera: Current State Of The Classification And Perspectives, Acta Palaeontologica Romaniae 20 (2), pp. 97-130 : 118

Family SCHUBERTELLIDAE Skinner, 1931

Test shortly fusiform to fusiform, often asymmetrical. Early stage discoidal, deviated in comparison with the later stage more or less fusiform, with acute poles. Septa numerous, unfluted in the center of the chambers but slightly fluted at the poles, especially in the outer whorls. Chomata low, asymmetrical and bordering a broad and low tunnel; occasional strong and ribbon-shaped. Wall bilayered with an outer tectum and a protheca. Primitive forms ( Schubertina or Eoschubertella of the authors) exhibit only the dark tectum; advanced forms ( Dutkevitchites , Oketaella and Biwaella ) exhibit, in the wall, the tectum and an inner porous layer. Aperture terminal simple. Bashkirian to latest Permian.