Classification of the family Lyonsiidae
Fm. Lyonsiidae Fischer 1887
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G. Lyonsia Turton 1822
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Subg. †Lyonsia (Endomargarus)
Lyonsia arenosa Möller 1842
Lyonsia californica Conrad 1837
†Lyonsia heberti Deshayes 1857
Lyonsia hyalina Conrad 1831
†Lyonsia pakistanica Eames 1951
†Lyonsia subaequilateralis Lundgren 1895
†Lyonsia venturaensis Clark and Woodford 1927
Invalid names: Pandorina Scacchi 1833 [synonym]
Invalid names: Spinolyonsiellidae Scarlato and Starobogatov 1983 [synonym]