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 Tellinoidea Blainville, 1814
Family Semelidae Stoliczka, 1870 (1825) - semelids
Genus Abra Lamarck, 1818
1 Subgenus Iacra Adams & Adams, 1856
see Genus Iacra Adams & Adams, 1856