WoRMS source details
Bronn, H. G., and E. Roemer, 1853, Lethaea Geognostica; vierte Periode; Kreide-Gebirge: Aufl. 3, Bd. 2, Theil 5 (1851-1852). Stuttgart: E. Schweizerbart.
364342
Bronn, H. G., and E. Roemer, 1853, Lethaea Geognostica; vierte Periode; Kreide-Gebirge: Aufl. 3, Bd. 2, Theil 5 (1851-1852). Stuttgart: E. Schweizerbart.
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Hymenocyclus Bronn & Roemer, 1853 † accepted as Orbitoides d'Orbigny, in Lyell, 1848 † (original description)
Omphalocyclus Bronn, 1853 † (original description)
Orbitulina Bronn, 1853 † accepted as Orbitolina d'Orbigny, 1850 † (original description)
Sagraina Bronn & Roemer, 1853 accepted as Sagrina d'Orbigny, 1839 (original description)
Omphalocyclus Bronn, 1853 † (original description)
Orbitulina Bronn, 1853 † accepted as Orbitolina d'Orbigny, 1850 † (original description)
Sagraina Bronn & Roemer, 1853 accepted as Sagrina d'Orbigny, 1839 (original description)
