Rzehakinidae

Silicosigmoilina groenlandica, copyright P. E. Jerna.

Belongs within: Miliolida.

The Rzehakinidae are a group of agglutinated or siliceous Foraminifera known from the Lower Cretaceous to the present (Loeblich & Tappan 1964).

Characters (from Loeblich & Tappan 1964): Test free, proloculus followed by tubular chambers, about half coil in length and added in various planes; wall siliceous or agglutinated, generally insoluble in acid.

<==Rzehakinidae [Paramiliolidae, Rzehakininae, Schlumberinida] LT64
    |--Rzehakina Cushman 1927 LT64
    |    `--*R. epigona (Rzehak 1895) [=Silicina epigona] LT64
    |--Spirolocammina Earland 1934 LT64
    |    `--*S. tenuis Earland 1934 LT64
    |--Ammoflintina Earland 1934 LT64
    |    `--*A. trihedra Earland 1934 LT64
    |--Spirosigmoilinella Matsunaga 1955 LT64
    |    `--*S. compressa Matsunaga 1955 LT64
    |--Trilocularena Loeblich & Tappan 1955 LT64
    |    `--*T. circularis (Heron-Allen & Earland 1930) [=Miliammina circularis] LT64
    |--Psamminopelta Tappan 1957 LT64
    |    |--*P. bowsheri Tappan 1957 LT64
    |    `--P. gradsteini H03
    `--Silicosigmoilina Cushman & Church 1929 [incl. Bramletteia Israelsky 1951] LT64
         |--*S. californica Cushman & Church 1929 LT64
         |--S. abyssalica H03
         |--S. groenlandica (Cushman 1933) [=Quinqueloculina fusca var. groenlandica] H03
         `--S. perplexa Israelsky 1951 [=S. (*Bramletteia) perplexa] LT64

*Type species of generic name indicated

REFERENCES

[H03] Hanagata, S. 2003. Miocene–Pliocene Foraminifera from the Niigata oil-fields region, northeastern Japan. Micropaleontology 49 (4): 293–340.

[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. 1. The Geological Society of America and The University of Kansas Press.