Classification of the genus Tropidodiscus

G. †Tropidodiscus Meek and Worthen 1866
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Subg. †Tropidodiscus (Tropidodiscus) Meek and Worthen 1866
Subg. †Tropidodiscus (Umbilicatus) Fix 1975
Tropidodiscus annularis Perner 1903
Tropidodiscus carnicus Spitz 1907
Tropidodiscus delanoui Oehlert and Oehlert 1888
Tropidodiscus geyeri Frech 1894
Tropidodiscus imitator Koken 1889
Tropidodiscus minimus Tschernischeff 1893
Tropidodiscus minimus americanus Williams and Breger 1916
Tropidodiscus nakazatensis Kase and Nishida 1986
Tropidodiscus obex Clarke 1907
Tropidodiscus phoenix Heidelberger 2001
Tropidodiscus pragensis Horný 1963
Tropidodiscus rotula de Koninck 1883
Invalid names: Oxydiscus Koken 1889 [objective synonym], Tropidocyclus de Koninck 1882 [synonym]