World Register of Marine Species (WoRMS)
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Sagraina Bronn & Roemer, 1853. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=528010 on 2026-08-25
Bronn, H. G., and E. Roemer, 1853, Lethaea Geognostica; vierte Periode; Kreide-Gebirge: Aufl. 3, Bd. 2, Theil 5 (1851-1852). Stuttgart: E. Schweizerbart.