[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Gastropoda Cuvier, 1795 - snails and slugs
       Family Buccinidae Rafinesque, 1815 - whelks
         Genus Neptunea Röding, 1798
           Neptunea antiqua (C. Linnaeus, 1758) - ancient neptune
           Neptunea brevicauda (Deshayes, 1832) - thick-ribbed whelk
           Neptunea contraria (Linnaeus, 1771) - contrary neptune
           Neptunea despecta (C. Linnaeus, 1758) - disreputable neptune