Phylum Foraminifera d'Orbigny, 1826 see Subphylum Foraminifera d'Orbigny, 1826 Class Miliolata Saidova, 1981 - porcelaneous foraminifers Subclass Miliolana Saidova, 1981 Superorder Costiferoida Mikhalevich, 1988 [monotypic] 1 Order Costiferida Mikhalevich, 1988