The Psammobiidae or sunset clams, are a family of medium-sized saltwater clams, marine bivalve molluscs of the order Veneroida. These genera are accepted by the database World Register of Marine Species: \n* Asaphis Modeer, 1793 \n* Gari Schumacher, 1817 \n* Heterodonax Mörch, 1853 \n* Heteroglypta Martens in Möbius, 1880 \n* Nuttallia Dall, 1900 \n* Psammosphaerica Jousseaume, 1894 \n* Psammotella Herrmannsen, 1852 \n* Sanguinolaria Lamarck, 1799 \n* Soletellina de Blainville, 1824