Pettersia abnormalis (FOSSIL) (Olsson 1944) †
Tucetona acuticostata (FOSSIL) (Sowerby, 1849 †) Dominican Republic
Glycymeris adenenesis (F.P. Jousseaume in É. Lamy, 1916)
Glycymeris advenus (FOSSIL) Pronina, 1969 † Eastern Kamchatka
Glycymerita aglikitschensis (FOSSIL) Devjatilova, 1981 † Russia, Anadyr' River
Glycymeris albolineata (C.E. Lischke, 1872) Belgium46 mm
Glycymeris amaamensis (FOSSIL) Volobueva, 1981 † Kamchatka
Tucetilla amamiensis (J.T. Kuroda, 1930) Philippines, Aliguay Island14,1 mm
Glycymeris americana J.L.M. Defrance, 1826 Panama100 mm
Glycymerita anae (FOSSIL) Smith, 1945 † USA, California, San Mateo
Glycymerita andersoni (FOSSIL) R.E. Dickerson † Russia, Anadyr' River
Glycymeris angsanana (FOSSIL) Martin, 1921 † Indonesia, Jawa Tengah, Wonosobo
Tucetona angusticosta K.L. Lamprell& T. Whitehead, 1990 Western Australia
Axinactis angusticostata (FOSSIL) (Lamarck 1807) †
Glycymeris angusticostata (FOSSIL) Costa, 1778 † Ukraine
Glycymeris angustidens (FOSSIL) A. Watelet, 1851 † France, Paris Basin
Glycymeris anteparilis (FOSSIL) Kellum, 1926 † USA, North Carolina, Onslow
Glycymerita apletos (FOSSIL) Dailey & W.P. Popenoe,1966 † Russia, Sakhalin Island
Glycymeris arabica (C.B. Adams, 1871) Gulf of Aqaba14 mm
Tucetona arata (FOSSIL) (T.A. Conrad, 1841 †) Florida
Tucetona arcodentiens (W.H. Dall, 1895) Hawaii, Oahu24 mm
Glycymeris arctata (FOSSIL) T.A. Conrad, 1848 † USA, Mississippi, Smith
Glycymeris arquilloensis (FOSSIL) Rivera, 1957 † Peru, Ica
Glycymeris aspersa (A. Adams & L.A. Reeve,1850) China, Zhejiang30 mm
Tucetona aucklandica (FOSSIL) (A.W.B. Powell, 1938 †) New Zealand, Auckland
Tucetona audouini A. Matsukuma, 1984 Mozambique, Inhaca Island31 mm
Tucetona aureomaculata (G.F. Angas, 1879)
Glycymeris auriculatus (FOSSIL) (H.G. Bronn, 1823 †) Italy, Veneto
Tucetona auriflua (L.A. Reeve, 1843) Philippines, Calituban Island42 mm
Glycymeris australis J.R.C. Quoy& J.P. Gaimard, 1832 New Caledonia50 mm
Glycymeris baumanni (FOSSIL) C.J. Maury, 1924 † Brazil, Rio Pirabas
Tucetona bicolor (L.A. Reeve, 1843) Ecuador, Guayaquil
Glycymeris bimaculata (G.S. Poli, 1795) Spain, Almeria86 mm
Glycymeris boguensis (FOSSIL) H.G. Richards& A. Harbison, 1947 †
Glycymeris boucheti A. Matsukuma, 1984 Japan