Belongs within: Archaediscoida.
The Tetrataxidae are a group of conical Foraminifera known from the lower Carboniferous to the Triassic. In the genus Tetrataxis, all of the numerous low, broad chambers are visible on the spiral side of the test, and only a few visible on the umbilical side (Loeblich & Tappan 1964).
Characters (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 1928LT64
| |--*P. laheei Cushman & Waters 1928LT64
| `--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
References
[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”.