Phylum Foraminifera d'Orbigny, 1826 see Subphylum Foraminifera d'Orbigny, 1826 Status: unknown Class Miliolata Saidova, 1981 - porcelaneous foraminifers Period: Carboniferous - Present [358.9 Mya - present]; Status: extant 1 Subclass Miliamminana Mikhalevich, 1980 Status: unknown 2 Subclass Miliolana Saidova, 1981 Status: unknown