Kingdom Animalia Linnaeus, 1758 - animals
Count: -
   Phylum Brachiopoda Duméril, 1806 - brachiopods
  Count: -
     Class Inarticulata (Huxley, 1869)
    Count: [*] 2o; †2o
       Order Acrotretida Kuhn, 1949
      Count: -
         Suborder Craniidina Waagen, 1885 see Order Craniida Waagen, 1885
        Count: -
           Genus †Isocrania Jaekel, 1902
          Count: -