| Nominotypical taxon of | : | Sigmoilinitidae (Family) Łuczkowska, 1974 | |
Ref: A.V. Mikhalevich, 2005: 307. [inferred] |
| Type | : | Sigmoilinita (Genus) Seiglie, 1965 | |
Ref: A.V. Mikhalevich, 2005: 307. [inferred] |
| Type, by synonymy | : | Spirosigmoilina (Genus) Parr, 1942 | |
Ref: B.W. Hayward et al.: [11 Nov 2015]. [inferred] |