Class Bivalvia Linnaeus, 1758 - bivalves
   Subclass Autobranchia Grobben, 1894
     Superorder Heteroconchia Gray, 1854
       Clade Palaeoheterodonta Newell, 1965
         Order Unionida Gray, 1854
           Superfamily Unionoidea Rafinesque, 1820
             Family Unionidae Rafinesque, 1820 - pearly mussels
               Subfamily Ambleminae Rafinesque, 1820
                 1 Tribe Amblemini Rafinesque, 1820
                 2 Tribe Lampsilini Ihering, 1901
                 3 ?Tribe Oxynaiini Starobogatov, 1970
                 4 Tribe Pleurobemini Hannibal, 1912
                 5 Tribe Quadrulini Ihering, 1901