Belongs within: Spirillinana.
The Involutinidae are a Mesozoic assemblage of foraminiferans with a tubular, enrolled test (Loeblich & Tappan 1964).
Characters (Loeblich & Tappan 1964): Test tubular and enrolled, with secondary deposits in umbilical region on one or both sides; wall calcareous perforate, lamellar, microgranular.
<==Involutinidae [Involutininae]
|--Bancilina Neagu 1995M13
|--Neohemigordius Wang & Sun 1973HW93
|--Hensonina Moullade & Peybernes 1974HW93
|--Semiinvoluta Kristan 1957LT64
| `--*S. clari Kristan 1957LT64
|--Involutina Terquem 1862 [=Arinvolutoum Rhumbler 1913; incl. Arproblematoum Rhumbler 1913, Problematina Bornemann 1874]LT64
| |--I. liassica (Jones in Brodie 1853) [=Nummulites liassicus; incl. *I. jonesi Terquem & Piette in Terquem 1862]LT64
| `--I. deslongchampsi Terquem 1864 [=*Arproblematoum deslongchampsi, *Problematina deslongchampsi]LT64
`--Trocholina Paalzow 1922 [incl. Neotrocholina Reichel 1956, Trochonella Kristan 1957]LT64
|--*T. conica (Schlumberger 1898) [=Involutina conica]LT64
|--T. alpinaGM-C02
|--T. crassa Kristan 1957 [=T. (*Trochonella) crassa]LT64
`--T. valdensis (Reichel 1956) [=*Neotrocholina valdensis]LT64
*Type species of generic name indicated
References
[GM-C02] Gomez, B., C. Martín-Closas, G. Barale, N. Solé de Porta, F. Thévenard & G. Guignard. 2002. Frenelopsis (Coniferales: Cheirolepidiaceae) and related male organ genera from the Lower Cretaceous of Spain. Palaeontology 45 (5): 997–1036.
[HW93] Hart, M. B., & C. L. Williams. 1993. Protozoa. In: Benton, M. J. (ed.) The Fossil Record 2 pp. 43–70. Chapman & Hall: London.
[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.
[M13] Mikhalevich, V. I. 2013. New insight into the systematics and evolution of the Foraminifera. Micropaleontology 59 (6): 493–527.