Siphonina bradyana, copyright Renata Moura.

Belongs within: Discorbidae.

The Siphoninidae are a group of Foraminifera known from the Eocene to the present, commonly bearing a frilled keel around the outer edge of the test (Loeblich & Tappan 1964).

Characters (from Loeblich & Tappan 1964): Test trochospiral or may become uncoiled or biserial, periphery commonly with fimbriate keel; aperture oval, bordered by distinct lip and projecting on neck.

Siphoninidae [Siphonininae]
    |--Siphonides Feray 1941 LT64
    |    `--*S. biserialis Feray 1941 LT64
    |--Siphoninoides Cushman 1927 C40
    |    |--*S. echinata (Brady 1879) [=Planorbulina echinata] C40
    |    `--S. laevigatus S05
    |--Siphoninella Cushman 1927 C40
    |    |--*S. soluta (Brady 1881) [=Truncatulina soluta] C40
    |    `--S. claibornensis C40
    `--Siphonina Reuss 1850 C40
         |--S. reticulata (Cžjžek 1848) [=Rotalina reticulata; incl. *S. fimbriata Reuss 1850] LT64
         |--S. australis B49
         |--S. bradyana JW99
         |--S. howei C40
         `--S. tubulosa C40

*Type species of generic name indicated


[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).

[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.

[S05] Semeniuk, T. A. 2005. Fossil foraminiferal assemblages from Pleistocene seagrass-bank deposits of the southern Perth Basin, Western Australia, and their palaeotemperature implications. Journal of the Royal Society of Western Australia 88 (4): 177–190.

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