Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Animale nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Amphibia nom. inval. - reptiles and amphibians see Class Amphibia Linnaeus, 1758
           Order Serpentia nom. inval. see Order Serpentes Linnaeus, 1758
             Genus Anguis nom. inval. see Genus Anguis Linnaeus, 1758
               1 Vipera nom. inval.
               2 Caecilia nom. inval.
               3 Aspis nom. inval.
               4 Caudisona nom. inval.
               5 Cobras de Cabelo nom. inval.
               6 Anguis Aesculapii nom. inval.
               7 Cenchris nom. inval.
               8 Natrix nom. inval.
               9 Hydrus nom. inval.