[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Aplacophora von Ihering, 1876 - aplacophorans see Phylum Mollusca Linnaeus, 1758
       Family Dondersiidae Simroth, 1893
         Genus Helluoherpia Handl & Büchinger, 1996
           1 Helluoherpia aegiri Handl & Büchinger, 1996