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 Trilocularenidae Mikhalevich & Kaminski, 2008 Genus Trilocularenaᵀ Loeblich & Tappan, 1955 Miliammina circularisᵀ Heron-Allen & Earland, 1930 see Trilocularena circularis (Heron-Allen & Earland, 1930)