Lyonsia shimkevitch (G.O. Sars, 1868)
Lyonsia subaequilateralis Lundgren, 1895
Lyonsia subplicata (FOSSIL) A.V.M.D. D'Orbigny,1850 †
Lyonsia taiwanica T.C. Lan & T.A. Okutani,2002
Lyonsia teramachii (T. Habe, 1952)
Lyonsia ventricosa A.A. Gould, 1861
Lyonsia venturaensis (FOSSIL) Clark & Woodford, 1927 †
Lyonsia vniroi O.A. Scarlato, 1981
Ostomya carinata (FOSSIL) Wesselingh, 2006 †
Ostomya myiformis (FOSSIL) Wesselingh, 2006 †
Ostomya papyria (FOSSIL) T.A. Conrad, 1874 †