Osangulariidae

Gyroidinoides nitida, copyright Dieter Ketelsen.

Belongs within: Rotaliida.

The Osangulariidae are a group of trochospiral Foraminifera known from the Lower Cretaceous to the present (Loeblich & Tappan 1964b).

Characters (from Loeblich & Tappan 1964b): Test trochospiral; wall calcareous, perforate granular in structure, bilamellar; aperture with interiomarginal portion and vertical or oblique portion extending up apertural face, two parts may be joined or distinct separate openings, areal opening may be multiple.

<==Osangulariidae
    |--Charltonina Bermúdez 1952 LT64b
    |    `--*C. madrugaensis (Cushman & Bermúdez 1948) [=Pseudoparrella madrugaensis] LT64b
    |--Conorotalites Kaever 1958 LT64b
    |    `--*C. aptiensis (Bettenstaedt 1952) [=Globorotalites bartensteini aptiensis] LT64b
    |--Cribroparrella Ten Dam 1948 [=Cribroparella, Dribroparella] LT64b
    |    `--*C. regadana Ten Dam 1948 LT64b
    |--Goupillaudina Marie 1958 LT64b
    |    `--*G. daguini Marie 1958 LT64b
    |--Globorotalites Brotzen 1942 LT64b
    |    |--*G. multisepta (Brotzen 1936) [=Globorotalia multisepta] LT64b
    |    `--G. micheliniana LT64b
    |--Osangularia Brotzen 1940 [incl. Parrella Finlay 1939 non Ginsburg 1938] LT64b
    |    |--*O. lens Brotzen 1940 LT64b
    |    |--O. bengalensis (Schwager 1866) [=Anomalina bengalensis, *Parrella bengalensis] LT64b
    |    |--O. californica BL79
    |    |--O. culter JW99
    |    `--O. infracretacea BL79
    `--Gyroidinoides Brotzen 1942 LT64a, BL79
         |--*G. nitida (Reuss 1844) [=Rotalina nitida] LT64b
         |--G. depressa M08
         |--G. infracretacea BL79
         |--G. lamarckiana JW99
         |--G. mjatliukae BL79
         `--G. paleovortex BL79

*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.

[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.

[LT64a] Loeblich, A. R., Jr & H. Tappan. 1964a. Sarcodina: chiefly “thecamoebians” and Foraminiferida. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt C. Protista 2 vol. 1. The Geological Society of America and The University of Kansas Press.

[LT64b] Loeblich, A. R., Jr & H. Tappan. 1964b. 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.

[M08] McMillan, I. K. 2008. Reappraisal of foraminiferal assemblages of the Santonia-Campanian Mzamba Formation type section, and their correlation with the stratigraphic succession of the KwaZulu Basin. African Natural History 4: 25–34.