Belongs within: Polymorphinida.
The Pleurostomellidae are a group of Foraminifera known from the Lower Cretaceous (possibly Jurassic) to the present, characterised by the presence of an internal siphon running between the apertures of successive chambers. In Pleurostomellinae the test is uniserial throughout or initially biserial and later uniserial (Loeblich & Tappan 1964).
Characters (Loeblich & Tappan 1964): Early stage triserial or biserial, later uniserial, or uniserial throughout; aperture a curved narrow slit, lateral or terminal, with internal siphon between those of adjacent chambers.
<==Pleurostomellidae [Pleurostomellacea]
|--WheelerellinaeM13
| |--Wheelerella Petters 1954LT64
| | `--*W. magdalenaensis Petters 1954LT64
| `--Bandyella Loeblich & Tappan 1962LT64
| `--*B. greatvalleyensis (Trujillo 1960) [=Pleurostomella greatvalleyensis]LT64
|--PazdroellinaeM13
| |--Pazdroella Gawor-Biedowa 1987M13
| | `--*P. olgae Gawor-Biedowa 1987G-B87
| |--Triaperturina Gawor-Biedowa 1987M13
| | `--*T. polonica Gawor-Biedowa 1987G-B87
| `--Quadriaperturina Gawor-Biedowa 1987M13
| `--*Q. varsoviensis Gawor-Biedowa 1987G-B87
|--CribropleurostomellinaeM13
`--PleurostomellinaeM13
|--Daucina Bornemann in Erman 1855LT64
| `--*D. ermaniana Bornemann in Erman 1855LT64
|--Pinaria Bermúdez 1937LT64
| `--*P. heterosculpta Bermúdez 1937LT64
|--Ellipsodimorphina Silvestri 1901LT64
| `--*E. subcompacta Silvestri 1901LT64
|--Ellipsoidella Heron-Allen & Earland 1910LT64
| `--*E. pleurostomelloides Heron-Allen & Earland 1910LT64
|--Czarkowyella Gawor-Biedowa 1987M13
| `--*C. czarkowyensis Gawor-Biedowa 1987G-B87
|--Delphinoidella Popescu 1992M13
|--Neopleurostomella Srinivasan & Rai 1992M13
|--Obesopleurostomella Hayward in Hayward et al. 1992M13
|--Ossaggittia Hayward & Kawagata in Hayward et al. 1992M13
|--Pleurostomella Reuss 1860 [=Ellipsodentalina Franke 1928; incl. Pleurostomellina Schubert 1911]LT64
| |--*P. subnodosa (Reuss 1851) [=Dentalina subnodosa, Ellipsonodosaria (*Ellipsodentalina) subnodosa]LT64
| |--P. alternansJW99
| |--P. barroisi Berthelin 1880 [=*Pleurostomellina barroisi]LT64
| |--P. brevisLT64
| |--P. clavataC40
| |--P. copiosaBL79
| |--P. mirabilisBL79
| |--P. obtusaBL79
| |--P. pleurostomellaC40
| |--P. reussiRC02
| |--P. subbotinaeBL79
| `--P. wadowicensisG-B87
|--Ellipsobulimina Silvestri 1903LT64
| `--*E. seguenzai Silvestri 1903LT64
|--Ellipsopolymorphina Silvestri 1901 [incl. Ellipsopleurostomella Silvestri 1903]LT64
| |--*E. fornasinii Galloway 1933LT64
| |--‘Ellipsopleurostomella’ curtaC40
| |--‘Polymorphina’ labiata [=Ellipsopleurostomella labiata]LT64
| `--E. schlichti (Silvestri 1903) [=*Ellipsopleurostomella schlichti]LT64
|--Ellipsolingulina Silvestri 1907LT64
| |--*E. impressa (Terquem 1882) [=Lingulina impressa]LT64
| `--E. silvestriiLT64
|--Nodosarella Rzehak 1895 [incl. Ellipsonodosaria Silvestri 1900]LT64
| |--*N. tuberosa (Gümbel 1870) [=Lingulina tuberosa]LT64
| |--N. coalingensisC40
| |--N. rotundata (d’Orbigny 1846) [=Lingulina rotundata, *Ellipsonodosaria rotundata]LT64
| |--N. salmojraghiiC40
| `--‘Ellipsonodosaria’ subconicaB49
`--Ellipsoglandulina Silvestri 1900LT64
|--*E. laevigata Silvestri 1900LT64
|--E. labiataC40
`--E. velascoensisC40
*Type species of generic name indicated
References
[BL79] Basov, V. A., B. G. Lopatin, I. S. Gramberg, A. I. Danjushevskaya, V. Ya. Kaban’kov, V. M. Lazurkin & D. K. Patrunov. 1979. Lower Cretaceous lithostratigraphy near Galicia Bank. Initial Reports of the Deep Sea Drilling Project 47: 683–717.
[B49] Battey, M. H. 1949. The geology of the Tuakau-Mercer area, Auckland. Transactions and Proceedings of the Royal Society of New Zealand 77 (3): 429–455.
[C40] Cushman, J. A. 1940. Foraminifera: Their classification and economic use 3rd ed. Harvard University Press: Cambridge (Massachusetts).
[G-B87] Gawor-Biedowa, E. 1987. New benthic foraminifers from the Late Cretaceous of Poland. Acta Palaeontologica Polonica 32 (1–2): 49–72.
[JW99] Jian, Z.-M., L.-J. Wang, M. Kienast, M. Sarnthein, W. Kuhnt, H.-L. Lin & P.-X. Wang. 1999. Benthic foraminiferal paleoceanography of the South China Sea over the last 40,000 years. Marine Geology 156: 159–186.
[LT64] Loeblich, A. R., Jr & H. Tappan. 1964. Sarcodina: chiefly “thecamoebians” and Foraminiferida. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt C. Protista 2 vol. 2. The Geological Society of America and The University of Kansas Press.
[M13] Mikhalevich, V. I. 2013. New insight into the systematics and evolution of the Foraminifera. Micropaleontology 59 (6): 493–527.
[RC02] Riding, J. B., & J. A. Crame. 2002. Aptian to Coniacian (Early–Late Cretaceous) palynostratigraphy of the Gustav Group, James Ross Basin, Antarctica. Cretaceous Research 23: 739–760.