living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818
         Phylum Sarcomastigophora Honigberg & Balamuth, 1963
           Subphylum Sarcodina - amebas
             Superclass Rhizopoda - rhizopodans see Phylum Rhizopoda Dujardin, 1835
               Class Granuloreticulosa see Phylum Foraminifera d'Orbigny, 1826
                 Order Foraminiferida d'Orbigny, 1826 - foraminiferans see Class Foraminifera d'Orbigny, 1826
                   Suborder Rotaliina Delage & Herouard, 1896 see Order Rotaliida Lankester, 1885
                     Superfamily Cassidulinoidea d'Orbigny, 1839 see Order Cassidulinida d'Orbigny, 1839
                       Family Caucasinidae Bykova, 1959
                         1 Genus Caucasina Khalilov, 1951
                         2 Genus Sigmavirgulina Loeblich & Tappan, 1957
                         3 Genus Fursenkoina Loeblich & Tappan, 1961
                         4 Genus Coryphostoma Loeblich & Tappan, 1962
                         5 Genus Cassidella Hofker, 1953, nom. rej. prop. see Genus Fursenkoina Loeblich & Tappan, 1961
                         6 Genus Francesita Loeblich & Tappan, 1963
                         7 Genus Neocassidulina McCulloch, 1977