• Lyonsia W. Turton, 1822
• Lyonsia (Allogramma) Dall, 1903 accepted as Allogramma Dall, 1903
• Lyonsia (Allogramma) amabilis Dall, 1913 accepted as Allogramma oahuense (Dall, 1913)
• Lyonsia (Allogramma) annandalei H. C. Ray, 1952 accepted as Allogramma elegans (Jaeckel & Thiele, 1931)
• Lyonsia (Allogramma) oahuensis Dall, 1913 accepted as Allogramma oahuense (Dall, 1913)
• Lyonsia (Allogramma) oahuensis Dall, Bartsch & Rehder, 1938 accepted as Allogramma oahuense (Dall, 1913)
• Lyonsia (Endomargarus) Cossmann, 1886 † represented as Lyonsia W. Turton, 1822
• Lyonsia (Endomargarus) heberti Deshayes, 1857 † accepted as Lyonsia heberti Deshayes, 1857 †
• Lyonsia (Pandorina) Scacchi, 1833 accepted as Lyonsia W. Turton, 1822
• Lyonsia (Pandorina) flabellata A. Gould, 1861 accepted as Lyonsia flabellata A. Gould, 1861 accepted as Lyonsia arenosa (Møller, 1842)
• Lyonsia (Philippina) Dall, 1901 accepted as Entodesma R. A. Philippi, 1845
• Lyonsia (Phlyctiderma) Bartsch & Rehder, 1939 accepted as Phlyctiderma Bartsch & Rehder, 1939 accepted as Entodesma R. A. Philippi, 1845
• Lyonsia (Phlyctiderma) lucasana Bartsch & Rehder, 1939 accepted as Entodesma pictum (G. B. Sowerby I, 1834)
• Lyonsia acuta Dall, 1903 † (uncertain > unassessed)
• Lyonsia adriatica Coen, 1937 (uncertain > taxon inquirendum)
• Lyonsia aegeensis Sturany, 1896 accepted as Allogramma formosa (Jeffreys, 1882)
• Lyonsia agnewi Tenison Woods, 1876 † accepted as Panopea agnewi (Tenison Woods, 1876) †
• Lyonsia alvarezii A. d'Orbigny, 1846
• Lyonsia amabilis Dall, 1913 accepted as Allogramma oahuense (Dall, 1913)
• Lyonsia annandalei H. C. Ray, 1952 accepted as Allogramma elegans (Jaeckel & Thiele, 1931)
• Lyonsia arcaeformis E. von Martens, 1885
• Lyonsia arenosa (Møller, 1842)
• Lyonsia arenosa arenosa (Møller, 1842) accepted as Lyonsia arenosa (Møller, 1842)
• Lyonsia arenosa sibirica Leche, 1883 accepted as Lyonsia arenosa (Møller, 1842)
• Lyonsia arenosa tarasovi Scarlato, 1981 accepted as Lyonsia arenosa (Møller, 1842)
• Lyonsia arenosa var. sibirica Leche, 1883 accepted as Lyonsia arenosa (Møller, 1842)
• Lyonsia argentea Jeffreys, 1882 (uncertain > nomen dubium)
• Lyonsia baudoni Cossmann, 1886 †
• Lyonsia beana A. d'Orbigny, 1853 accepted as Entodesma brasiliense (A. Gould, 1850)
• Lyonsia beauii Arango, 1878 accepted as Entodesma brasiliense (A. Gould, 1850)
• Lyonsia bracteata (A. Gould, 1850)
• Lyonsia brevifrons G. B. Sowerby I, 1834 accepted as Entodesma brevifrons (G. B. Sowerby I, 1834)
• Lyonsia britannica M. Rouault, 1851 † accepted as Coxiconchia britannica (M. Rouault, 1851) †
• Lyonsia bulla Dall, 1881 accepted as Cetoconcha bulla (Dall, 1881)
• Lyonsia californica Conrad, 1837
• Lyonsia californica var. haroldi Dall, 1915 accepted as Lyonsia californica Conrad, 1837
• Lyonsia californica var. nesiotes Dall, 1915 accepted as Lyonsia nesiotes Dall, 1915
• Lyonsia celeste Pimenta & Oliveira, 2013
• Lyonsia cucumerina Ivanova, 1981
• Lyonsia delicatum Marincovich, 1973 accepted as Entodesma delicatum (Marincovich, 1973)
• Lyonsia densecostata W. H. Turton, 1932 (uncertain > taxon inquirendum)
• Lyonsia diaphana P. P. Carpenter, 1856 accepted as Entodesma inflatum (Conrad, 1837)
• Lyonsia elegans A. d'Orbigny, 1845 † (uncertain > unassessed)
• Lyonsia elegans Jaeckel & Thiele, 1931 accepted as Allogramma elegans (Jaeckel & Thiele, 1931)
• Lyonsia elegantulum T. Soot-Ryen, 1957 accepted as Entodesma solemyalis (Lamarck, 1818)
• Lyonsia flabellata A. Gould, 1861 accepted as Lyonsia arenosa (Møller, 1842)
• Lyonsia floridana Conrad, 1849
• Lyonsia formosa Jeffreys, 1874 accepted as Allogramma formosa (Jeffreys, 1882)
• Lyonsia formosa Jeffreys, 1882 accepted as Allogramma formosa (Jeffreys, 1882)
• Lyonsia formosa var. major Locard, 1898 accepted as Allogramma formosa (Jeffreys, 1882)
• Lyonsia formosa var. transversa Locard, 1898 accepted as Allogramma formosa (Jeffreys, 1882)
• Lyonsia fretalis Dall, 1915 accepted as Entodesma solemyalis (Lamarck, 1818)
• Lyonsia gagarae Scarlato & Kafanov, 1988
• Lyonsia gibbosa Hancock, 1846 accepted as Lyonsia arenosa (Møller, 1842)
• Lyonsia gouldii Dall, 1915 accepted as Lyonsia californica Conrad, 1837
• Lyonsia granulifera A. E. Verrill & K. J. Bush, 1898
• Lyonsia heberti Deshayes, 1857 †
• Lyonsia hyalina (Conrad, 1831)
• Lyonsia hyalina floridana Conrad, 1849 accepted as Lyonsia floridana Conrad, 1849
• Lyonsia hyalina hyalina (Conrad, 1831) accepted as Lyonsia hyalina (Conrad, 1831)
• Lyonsia inflata Conrad, 1837 accepted as Entodesma inflatum (Conrad, 1837)
• Lyonsia inflata Scarlato, 1981 accepted as Lyonsia gagarae Scarlato & Kafanov, 1988
• Lyonsia intracta Sturany, 1899 accepted as Poromya intracta (Sturany, 1899)
• Lyonsia jucunda E. A. Smith, 1896 accepted as Allogramma elegans (Jaeckel & Thiele, 1931)
• Lyonsia kawamurai Habe, 1952
• Lyonsia lucasana Bartsch & Rehder, 1939 accepted as Entodesma pictum (G. B. Sowerby I, 1834)
• Lyonsia magnifica (Dall, 1913) accepted as Lyonsiella magnifica Dall, 1913
• Lyonsia malvinensis A. d'Orbigny, 1846
• Lyonsia mooreae Marincovich, 1983 †
• Lyonsia morgani Chaper, 1885 (uncertain > taxon inquirendum)
• Lyonsia navicula A. Adams & Reeve, 1850 accepted as Entodesma navicula (A. Adams & Reeve, 1850)
• Lyonsia nesiotes Dall, 1915
• Lyonsia norwegica (Gmelin, 1791)
• Lyonsia norwegica var. major Bucquoy, Dautzenberg & Dollfus, 1889 accepted as Lyonsia norwegica (Gmelin, 1791)
• Lyonsia nuculaniformis Scarlato, 1980 accepted as Lyonsia nuculanoformis Scarlato, 1980
• Lyonsia nuculanoformis Scarlato, 1980
• Lyonsia oahuense Dall, 1913 accepted as Allogramma oahuense (Dall, 1913)
• Lyonsia olonkini T. Soot-Ryen, 1932 accepted as Lyonsia arenosa (Møller, 1842)
• Lyonsia panamensis Dall, 1908 accepted as Cetoconcha panamensis (Dall, 1908)
• Lyonsia patagonica A. d'Orbigny, 1846 accepted as Entodesma patagonicum (A. d'Orbigny, 1846)
• Lyonsia patagonicum [sic] accepted as Lyonsia patagonica A. d'Orbigny, 1846 accepted as Entodesma patagonicum (A. d'Orbigny, 1846)
• Lyonsia picta G. B. Sowerby I, 1834 accepted as Entodesma pictum (G. B. Sowerby I, 1834)
• Lyonsia plicata [attributed to (Montagu, 1808)] in Forbes & Hanley, 1848 accepted as Saxicavella jeffreysi Winckworth, 1930
• Lyonsia plicata P. P. Carpenter, 1857 accepted as Entodesma brasiliense (A. Gould, 1850)
• Lyonsia praetenuis Dunker, 1882
• Lyonsia pugetensis Dall, 1913 accepted as Lyonsia bracteata (A. Gould, 1850)
• Lyonsia rostrata Lischke, 1874 accepted as Lyonsia ventricosa A. Gould, 1861
• Lyonsia samalinsulae Preston, 1914 accepted as Laternula samalinsulae (Preston, 1914)
• Lyonsia saxicola Baird, 1863 accepted as Entodesma navicula (A. Adams & Reeve, 1850)
• Lyonsia schimkevitschi Derjugin & Gurjanova, 1926 accepted as Lyonsia arenosa (Møller, 1842)
• Lyonsia striata (Montagu, 1816) accepted as Lyonsia norwegica (Gmelin, 1791)
• Lyonsia subplicata (A. d'Orbigny, 1850) †
• Lyonsia taiwanica Lan & Okutani, 2002
• Lyonsia tanakai Habe, 1981 accepted as Lyonsia praetenuis Dunker, 1882
• Lyonsia teramachii (T. Habe, 1952) accepted as Bentholyonsia teramachii (T. Habe, 1952)
• Lyonsia ventricosa A. Gould, 1861
• Lyonsia vicentina R. A. Philippi, 1887 † (uncertain > unassessed)
• Lyonsia vitrea F. W. Hutton, 1873 accepted as Thracia vitrea (F. W. Hutton, 1873)
• Lyonsia vniroi Scarlato, 1981