Phylum [Mollusca] Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Order Veneroida H. & A. Adams, 1856 see Order Venerida Gray, 1854
       Superfamily Mactracea Lamarck, 1809 see Superfamily Mactroidea Lamarck, 1809
         Family Mactridae Lamarck, 1809 - surf clams
           Subfamily Mactrinae Lamarck, 1809
             Genus Mactra Linnaeus, 1767
               1 Subgenus Mactra (Mactra) Linnaeus, 1767