Axial section of Pseudofusulinella utahensis, from Loeblich & Tappan (1964).

Belongs within: Fusulinoida.

The Fusulininae are a group of fusulinid Foraminifera known from the Upper Carboniferous to the Upper Permian. In early genera such as Taitzehoella, the axis of coiling of the test changes between early and later stages; the test becomes planispiral throughout in more derived genera such as Fusulina (Loeblich & Tappan 1964).

Characters (from Loeblich & Tappan 1964): Shell spherical to elongate-fusiform or irregularly subcylindrical, early volutions coiled at large angle to outer ones in primitive genera, planispiral throughout in others; spirotheca generally composed of tectum with upper and lower tectoria, but many genera with diaphanotheca below tectum, and few having spirotheca of single dense, thin layer; septa plane in most primitive genera, first becoming fluted in polar regions and later becoming fluted completely across shell and to top of antetheca; tunnel singular, chomata massive to slight.

Fusulininae [Pseudotriticitinae]
|--Bartramella Verville, Thompson & Lokke 1956LT64
| `--*B. bartrami Verville, Thompson & Lokke 1956LT64
|--Hidaella Fujimoto & Igo 1955LT64
| `--*H. kameii Fujimoto & Igo 1955LT64
|--Kamaina Solovieva in Rauzer-Chernousova, Bensh et al. 1996R-CB96
| `--*K. kamensis (Safonova 1951) [=Fusulina kamensis]R-CB96
|--Pseudotriticites Putrja 1940R-CB96
| `--*P. donbassica (Putrja 1939) [=Fusulina donbassica]R-CB96
|--Quasifusulinoides Rauser & Rosovskaya 1959R-CB96
| `--*Q. fusiformis (Rosovskaya 1952) [=Pseudotriticites fusiformis]R-CB96
|--Pseudowedekindellina Sheng 1958 [incl. Frumentella Stewart 1958]LT64
| |--*P. prolixa Sheng 1958LT64
| `--P. exampla (Stewart 1958) [=*Frumentella exampla]LT64
`--Fusulina Fischer de Waldheim 1829LT64
|--*F. cylindrica Fischer de Waldheim 1829LT64 (see below for synonymy)
|--F. amedaeiG31
|--F. breviculaG31
|--F. contractaG31
|--F. eximiaLT64
|--F. granumavenaeG31
|--F. japonicaG31
|--F. kattaensisG31
|--F. krafftiG31
|--F. mansuyiG31
|--F. margheritiiG31
|--F. multiseptataG31
|--F. mysticensisLT64
|--F. pusillaG31
|--F. regularisG31
|--F. richthofeniG31
|--F. subcylindricaG31
|--F. tchengkiangensisG31
|--F. tenuissimaG31
|--F. verneuiliG31
`--F. vulgaris [incl. F. vulgaris var. exigua, F. vulgaris var. globosa]G31

*Fusulina cylindrica Fischer de Waldheim 1829LT64 [=Schellwienia cylindricaLT64; incl. F. depressa Fischer 1837W77, F. robusta Meek 1864W77]

*Type species of generic name indicated


[G31] Grabau, A. W. 1931. The Permian of Mongolia: A report on the Permian fauna of the Jisu Honguer limestone of Mongolia and its relations to the Permian of other parts of the world. American Museum of Natural History: New York.

[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.

[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”.

[W77] White, C. A. 1877. Report upon the invertebrate fossils collected in portions of Nevada, Utah, Colorado, New Mexico, and Arizona, by parties of the expeditions of 1871, 1872, 1873, and 1874. U.S. Geographical Surveys West of the One Hundredth Meridian 4 (1): 1–219, pls 1–21.

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