Various views of Tetrataxis conica, from Loeblich & Tapppan (1964).

Belongs within: Spirillinana.

The Tetrataxidae are a group of conical Foraminifera known from the lower Carboniferous to the Triassic (Loeblich & Tappan 1964).

Characters (from Loeblich & Tappan 1964): Test free, trochospiral, few chambers in whorl, conical; wall granular calcareous, in two layers.

<==Tetrataxidae [Tetrataxinae]
    |--Globotetrataxis Brazhnikova 1983R-CB96
    |    `--*G. elegantula (Brazhnikova 1983) [=Tetrataxis (*Globotetrataxis) elegantula]R-CB96
    |--Polytaxis Cushman & Waters 1928C40
    |    |--*P. laheei Cushman & Waters 1928C40
    |    `--P. multiloculataC40
    `--Tetrataxis Ehrenberg 1854 (see below for synonymy)LT64
         |--*T. conica Ehrenberg 1854 [=*Artetraxoum conicum]LT64
         |--T. angustaCM01
         |--T. hemisphaericaPE02
         |--T. lataPE02
         |--T. maxima [incl. T. maxima var. depressa]G31
         |--T. palaeotrochusC40
         |--T. planolocula Lee & Chen 1930 [=*Pseudotetrataxis planolocula]LT64
         |--‘Lituola’ rhaetica [=Ruditaxis rhaetica]F71
         |--‘Valvulina’ rudis Brady 1876 [=*Ruditaxis rudis]C40
         `--T. scutella Cushman & Waters 1928 [=*Falsotetrataxis scutella]LT64

Tetrataxis Ehrenberg 1854 [=Artetraxoum Rhumbler 1913; incl. Falsotetrataxis Marie in Deleau & Marie 1961, Pseudotetrataxis Marie in Deleau & Marie 1961, Ruditaxis Schubert 1921]LT64

*Type species of generic name indicated


[CM01] Cózar, P., & B. L. Mamet. 2001. Planohowchinia (Lasiodiscidae, Foraminiferida), a new Late Viséan genus, southwestern Spain. Journal of Foraminiferal Research 31 (3): 228–232.

[C40] Cushman, J. A. 1940. Foraminifera: Their classification and economic use 3rd ed. Harvard University Press: Cambridge (Massachusetts).

[F71] Fletcher, H. O. 1971. Catalogue of type specimens of fossils in the Australian Museum, Sydney. Australian Museum Memoir 13: 1–167.

[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.

[PE02] Pan, H.-Z., & D. H. Erwin. 2002. Gastropods from the Permian of Guangxi and Yunnan Provinces, south China. Journal of Paleontology 76 (Memoir 56): 1–49.

[R-CB96] Rauzer-Chernousova, D. M., F. R. Bensh, M. V. Vdovenko, N. B. Gibshman, E. Y. Leven, O. A. Lipina, E. A. Reitlinger, M. N. Solovieva & I. O. Chedija. 1996. Spravočnik po Sistematike Foraminifer Paleozoâ (Èndotiroidy, Fuzulinoidy). Rossijskaâ Akademiâ Nauk, Geologičeskij Institut, Moskva “Nauka”.

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