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
"protists" incertae sedis
Group †Acritarcha Evitt, 1963, incertae sedis [polyphyletic] - acritarchs
Genus †Baltisphaeridium Eisenack, 1958 ex Eisenack, 1959
†Baltisphaeridium longispinosumᵀ (Eisenack, 1931)
†Baltisphaeridium muldiensis Le Hérissé (1989)