Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       particles
         hadrons - composite particles
           mesons - bosonic hadrons
             charmed mesons
               1.1.1 D+
               1.1.2 D-
               1.2.1 D0
               1.2.2 ¯D0
               2.1 D*(2007)0
               2.2 ¯D*(2007)0
               3.1 D*(2010)+
               3.2 D*(2010)-
               4.1 D(1)(2420)0
               4.2 ¯D(1)(2420)0
               5.1.1 D(2)*(2460)+
               5.1.2 D(2)*(2460)-
               5.2.1 D(2)*(2460)0
               5.2.2 ¯D(2)*(2460)0