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 Ammodiscana Mikhalevich, 1980 Order Plagioraphida Mikhalevich, 2003 [monotypic] 1 Family Plagioraphidae Mikhalevich, 1995 [monotypic]