Phylum Foraminifera d'Orbigny, 1826 see Subphylum Foraminifera d'Orbigny, 1826 Class Miliolata Saidova, 1981 - porcelaneous foraminifers Subclass Miliamminana Mikhalevich, 1980 Order Schlumbergerinida Mikhalevich, 1980 Family Sigmoilopsidae Vella, 1957 Subfamily Spirolocammininae Mikhalevich & Kaminski, 2008 Genus Spirolocamminaᵀ Earland, 1934 1 Spirolocammina tenuisᵀ Earland, 1934