Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Lapideum - mineral kingdom
         Class Fossilia nom. inval. - Lapides aggregati
           Order Terræ
             Genus Argilla - clay
               1 Argilla apyra
               1.0 Argilla gallica see Argilla apyra
               2 Argilla calcarea nivea
               2.0 Argilla nivea see Argilla calcarea nivea
               3 Argilla vitrescens, vitro subdiaphano
               3.0 Porcellana Stimpson, 1862 see Argilla vitrescens, vitro subdiaphano
               4 Argilla vitrescens tessulata
               4.0 Argilla figulina see Argilla vitrescens tessulata
               5 Argilla vitrescens rudis
               5.0 Argilla vulgaris see Argilla vitrescens rudis
               6 Argilla vitrescens impalpabilis
               6.0.1 Bolus see Argilla vitrescens impalpabilis
               6.0.2 Terra Sigillata see Argilla vitrescens impalpabilis