eukaryotes see Domain Eukaryota Chatton, 1925 Nucleariidae Cann & Page, 1979 1 Genus Nuclearia Cienkowski, 1865 2 Genus Pompholyxophrys Archer, 1869 3 Genus Pinaciophora Greeff, 1873 4 Genus Rabdiophrys Rainer, 1968 5 Genus Vampyrellidium Zopf, 1885