Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "crystal-kingdom"
           [†pseudofossils]
             [Genus †Eoleptonema Schopf (1983)] see Genus Eoleptonema Schopf 1983 nom. inval.
               1 †Eoleptonema australicum Schopf, 1983