[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Class Bacillariophyceae Haeckel (1878) - pennates
       Subclass Bacillariophycidae D.G.Mann (1990) - raphid diatoms
         Order Thalassiophysales D.G.Mann (1990)
           Family Catenulaceae Mereschk. (1902)
             Genus Amphora Ehrenb. (1840)
               1 Amphora hyalina Kützing (1844)
               2 Amphora marina W.Sm. (1857)
               3 Amphora ostrearia Bréb., in Kützing
               4 Amphora ovalis Kützing (1844)