Lyonsiidae Pholadomyoida ordeneko bibalbo familia bat da.
- Allogramma Dall, 1903
- Bentholyonsia Habe, 1952
- Entodesma Phillips, 1845
- Entodesma beana (d'Orbigny, 1853)
- Entodesma brasiliense (Gould, 1850)
- Entodesma brevifrons (G.B. Sowerby I, 1834)
- Entodesma cuneata (Gray, 1828)
- Entodesma delicatum (Marincovich, 1973)
- Entodesma elongatulum Soot-Ryen, 1957
- Entodesma fretalis (Dall, 1915)
- Entodesma lucasana (Bartsch & Rehder, 1939)
- Entodesma navicula (A. Adams and Reeve, 1850)
- Entodesma patagonicum (d'Orbigny, 1846)
- Entodesma pictum (G. B. Sowerby I, 1834)
- Entodesma saxicola (Baird, 1863)
- Entodesma sechuranum Pilsbry & Olsson, 1935
- Entodesma solemyalis (Lamarck, 1818)
- Entodesma weisbordi Macsotay & Campos, 2001
- Lyonsia Turton, 1822
- Lyonsia adriatica
- Lyonsia alvarezii d'Orbigny, 1846
- Lyonsia arcaeforme Martens, 1885
- Lyonsia arenosa (Moller, 1842)
- Lyonsia argentea Jeffreys, 1881
- Lyonsia bracteata (Gould, 1850)
- Lyonsia californica Conrad, 1837
- Lyonsia cucumerina Ivanova in Scarlato, 1981
- Lyonsia floridana Conrad, 1849
- Lyonsia granulifera A. E. Verrill and Bush, 1898
- Lyonsia hyalina Conrad, 1831
- Lyonsia kawamurai Habe, 1952
- Lyonsia malvinensis d'Orbigny, 1846
- Lyonsia norvegica (J.F. Gmelin, 1791)
- Lyonsia nuculaniformis Scarlato, 1981
- Lyonsia panamensis Dall, 1908
- Lyonsia praetenuis Dunker, 1882
- Lyonsia shimkevitch (M. Sars, 1868)
- Lyonsia striata (Montagu, 1815)
- Lyonsia taiwanica Lan & Okutani, 2002
- Lyonsia ventricosa Gould, 1861
- Lyonsia vniroi Scarlato, 1981