Classification of Harper 1981
G. †Ianthinopsis Meek and Worthen 1866
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†Ianthinopsis tumida Meek and Worthen 1861
G. †Strobeus de Koninck 1881
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†Strobeus acutum Sowerby 1827
†Strobeus arculatus von Schlotheim 1820
†Strobeus brancoi Gemmellaro 1889
†Strobeus gouldiana Girty 1912
†Strobeus klipparti Meek 1871
†Strobeus littonana Hall 1856
†Strobeus paludinaeformis Hall 1858
†Strobeus primogenia Conrad 1835
†Strobeus regularis Cox 1857
†Strobeus ventricosus de Koninck 1881
Invalid names: Macrochilina Bayle 1880 [synonym], Sphaerodoma Keyes 1889 [synonym]