Class Bivalvia Linnaeus, 1758 - bivalves
   Subclass Autobranchia Grobben, 1894
     Superorder Pteriomorphia Beurlen, 1944
       Order Pectinida Gray, 1854
         Superfamily Pectinoidea Rafinesque, 1815
           1 Family Pectinidae Rafinesque, 1815 - scallops
           2 Family Entoliidae Teppner, 1922
           3 Family †Entolioidesidae Kasum-Zade, 2003
           4 Family †Neitheidae Sobetski, 1960
           5 Family †Pernopectinidae Newell, 1938
           6 Family Propeamussiidae Abbott, 1954
           7 Family †Tosapectinidae Trushchelev, 1984
           8 Family Spondylidae Gray, 1826 - thorny oysters