Phylum Mollusca Linnaeus, 1758 - molluscs
Class Bivalvia Linnaeus, 1758 - bivalves
Subclass Heterodonta Neumayr, 1884
see Clade Heterodonta Neumayr, 1884
Order Chamida
see Order Venerida Gray, 1854
Superfamily Mactroidea Lamarck, 1809
Family Mactridae Lamarck, 1809 - surf clams
Subfamily Mactrinae Lamarck, 1809
Genus Mactra Linnaeus, 1767
Subgenus Nannomactra Iredale, 1930