organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     alveolates Cavalier-Smith see [unranked] Alveolata Cavalier-Smith, 1991
       Phylum Ciliophora Doflein, 1901 - ciliates
         Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
           Class Nassophorea Small & Lynn, 1981
             Order Nassulida Jankowski, 1967
               Family Nassulidae de Fromentel, 1874
                 1 Genus Nassula Ehrenberg, 1834
                 2 Genus Obertrumia Foissner & Adam, 1981
                 3 Genus Naxella Foissner & O'Donoghue, 1990
                 4 Genus Rhinakis Iftode et al., in Deroux, 1994, nom. nud.