Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
[crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Clade neomura Cavalier-Smith, 1987
Domain Eukaryota Chatton, 1925 - eukaryotes
Clade discaria Cavalier-Smith, 2021
Clade natates Cavalier-Smith, 2021
Clade photaria Cavalier-Smith, 2021
Clade eucorta Cavalier-Smith, 2021
Superkingdom Corticata Lankester, 1878 - corticates
Kingdom Chromista Caval.-Sm. (1981) - chromists
Subkingdom Harosa Cavalier-Smith, 2010
[crown] Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
Infrakingdom Rhizaria Cavalier-Smith, 2002
Phylum Retaria Cavalier-Smith, 2002
Subphylum Radiozoa Cavalier-Smith, 1987
Superclass Polycystinia Ehrenberg, 1838
Class Nassellaria Ehrenberg, 1847
Order Cyrtidinata Haeckel, 1862
Superfamily Eucyrtidioidea Ehrenberg, 1847
Family Eucyrtidiidaeᵀ Ehrenberg, 1847
Subfamily Eucyrtidiinaeᵀ Ehrenberg, 1847
Genus Eucyrtidiumᵀ Ehrenberg, 1847
01 Eucyrtidium acuminatum (Ehrenberg, 1844)
02 †Eucyrtidium aderces Nigrini & Caulet, 1992
03 †Eucyrtidium anniae Caulet, 1986
04 Eucyrtidium annulatum (Popofsky, 1913)
05 Eucyrtidium anomalum (Haeckel, 1860)
06 †Eucyrtidium antiquum Caulet, 1991
07 †Eucyrtidium asanoi Sakai, 1980
08 †Eucyrtidium biconicum (Vinassa de Regny, 1900)
09 Eucyrtidium calvertense Martin, 1904
10 †Eucyrtidium cheni Takemura, 1992
11 †Eucyrtidium cienkowskii Haeckel, 1887
12 †Eucyrtidium diaphanes Sanfilippo, 1973
13 Eucyrtidium dictyopodium (Haeckel, 1887)
14 †Eucyrtidium dufresni Caulet, 1979
15 Eucyrtidium erythromystax Nigrini & Caulet, 1992
16 †Eucyrtidium heptacolum (Haeckel, 1887)
17 †Eucyrtidium hexacolum (Haeckel, 1887)
18 Eucyrtidium hexagonatum Haeckel, 1887
19 Eucyrtidium hexastichum Haeckel, 1887
20 †Eucyrtidium indiensis Caulet, 1979
21 †Eucyrtidium inflatum Kling, 1973
22 †Eucyrtidium infundibulum (Haeckel, 1887)
23 †Eucyrtidium mariae Caulet, 1991
24 †Eucyrtidium matuyamai Hays, 1970
25 †Eucyrtidium montiparum Ehrenberg, 1873
26 †Eucyrtidium octocolum (Haeckel, 1887)
27 †Eucyrtidium pseudoinflatum Weaver, 1983
28 †Eucyrtidium punctatum (Ehrenberg, 1844)
29 †Eucyrtidium saccoi (Vinassa de Regny, 1900)
30 †Eucyrtidium spinosum Haeckel, 1887
31 Eucyrtidium teuscheri Haeckel, 1887
32 †Eucyrtidium yatsuoense Nakaseko, 1955