Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade dorsates Cavalier-Smith, 2021
                   Clade podiates Cavalier-Smith, 2012
                     [crown] Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                       [crown] Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                         [crown] Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] - animal-fungal clade
                           Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
                             Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
                               Kingdom Animalia Linnaeus, 1758 - animals
                                 Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
                                   Subkingdom Bilateria Hatschek, 1888 - bilaterians
                                     Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
                                       Infrakingdom Protostomia Grobben, 1908
                                         Superphylum Spiralia Schleip, 1929
                                           Clade Platytrochozoa Struck, Wey-Fabrizius, Golombek, Hering, Weigert, Bleidorn, Klebow, Iakovenko, Hausdorf, Petersen, Kück, Herlyn & Hankeln 2014
                                             Clade Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake 1995 - lophotrochozoans
                                               Clade Trochozoa Beklemischev, 1944 - trochozoans
                                                 Clade Tetraneuralia Wanninger 2009
                                                   Phylum Mollusca Linnaeus, 1758 - molluscs
                                                     Subphylum Conchifera Gegenbauer, 1878
                                                       Ganglioneura Rudophi, 1812
                                                         Clade Pleistomollusca Kocot, Cannon, Todt, Citarella, Kohn, Meyer, Santos, Schander, Moroz, Lieb & Halanych 2011
                                                           Class Gastropoda Cuvier, 1795 - snails and slugs
                                                             [Subclass Pulmonata Cuvier, 1814 - land snails and slugs] see Order Pulmonata Cuvier, 1814
                                                               [Order Stylommatophora Schmidt, 1855] see Infraorder Stylommatophora Schmidt, 1855
                                                                 [Suborder Sigmurethra Pilsbry, 1900] see Group Sigmurethra Pilsbry, 1900
                                                                   ["Helicid Sigmurethra"]
                                                                     [Superfamily "Helixarionoidea" Bourguignat, 1883, orth. inval.]
                                                                       [Family "Helixarionidae"ᵀ Bourguignat, 1883, orth. inval.] see Family Helicarionidae Bourguignat, 1877
                                                                         [Subfamily Ereptinae Godwin-Austen, 1908] see Subfamily Helicarioninae Bourguignat, 1877
                                                                           Genus Plegma Gude, 1911
                                                                             Plegma caelatura (Ferussac, 1821)