Supergroup Rhizaria Cavalier-Smith, 2002 see Infrakingdom Rhizaria Cavalier-Smith, 2002 Phylum Foraminifera d'Orbigny, 1826 see Subphylum Foraminifera d'Orbigny, 1826 Class Spirillinata Mikhalevich, 1992 Subclass Spirillinana Mikhalevich, 1992 Superorder Spirillinoida Hohenegger & Piller, 1975 ?Order Seabrookiida Mikhalevich, 1980 [monotypic] 1 Family Seabrookiidae Cushman, 1927