                                                ______ RSubduralMet
                                             __|
                                            |  |      , RIngLNMet
           _________________________________|  |______|
          |                                 |         |_ RRib7Met
  ________|                                 |
 |        |                                 |____________________ LAdrenalMet
_|        |
 |        |___________________ Primary
 |
 | diploid

