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 Miliamminidae Saidova, 1981 Subfamily Birsteiniollinae Mikhalevich & Kaminski, 2008 [monotypic] Genus Birsteiniollaᵀ Mayer, 1974 Birsteiniolla macrostomaᵀ Yankovskaya & Mikhalevich, 1972