Anomalodesmata

                  Pholadomyoida
                              Clavagelloidea
                                    Clavagellidae
                              Pandoroidea
                                    Cleidothaeridae
                                    Lyonsiidae
                                    Myochamidae
                                    Pandoridae
                              Pholadomyoidea
                                    Pholadomyidae
                              Poromyoidea
                                    Cuspidariidae
                                    Poromyidae
                                    Verticordiidae
                              Thracioidea
                                    Laternulidae
                                    Periplomatidae
                                    Thraciidae
                              Verticordioidea
                                    Euciroidae