Supergroup Rhizaria Cavalier-Smith, 2002
see Infrakingdom Rhizaria Cavalier-Smith, 2002
Phylum Foraminifera d'Orbigny, 1826
see Subphylum Foraminifera d'Orbigny, 1826
Class Nodosariata Mikhalevich, 1992
Subclass Hormosinana Mikhalevich, 1992
Order Ammomarginulinida Mikhalevich, 2002
Superfamily Ammomarginulinoidea Podobina, 1978
Family Orectostominidae Mikhalevich, 2003
1 Genus Orectostominaᵀ Seiglie, 1965