Schwager, C. (1877). Quadro del proposto sistema di classificazione dei foraminiferi con guscio. <em>Bolletino R. Comitato Geologico d'Italia.</em> 8: 18-27., available online athttps://biodiversitylibrary.org/page/53535675[details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Planorbulinoidea Schwager, 1877. Accessed through: Astudillo, J. C.; Williams, G. A.; Leung, K. M. Y.; Cannicci, S.; Yasuhara, M.; Yau, C.; Qiu, J-W.; Ang, P. O.; To, A. W. L.; Shea, S. K. H. (Eds.) (2025) Hong Kong Register of Marine Species at: https://marinespecies.org/hkrms/aphia.php?p=taxdetails&id=465851 on 2026-04-02
Astudillo, J. C.; Williams, G. A.; Leung, K. M. Y.; Cannicci, S.; Yasuhara, M.; Yau, C.; Qiu, J-W.; Ang, P. O.; To, A. W. L.; Shea, S. K. H. (Eds.) (2026). Hong Kong Register of Marine Species. Planorbulinoidea Schwager, 1877. Accessed at: https://www.marinespecies.org/hkrms/aphia.php?p=taxdetails&id=465851 on 2026-04-02
original descriptionSchwager, C. (1877). Quadro del proposto sistema di classificazione dei foraminiferi con guscio. <em>Bolletino R. Comitato Geologico d'Italia.</em> 8: 18-27., available online athttps://biodiversitylibrary.org/page/53535675[details]
additional sourceLoeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp., available online athttps://books.google.pt/books?id=n_BqCQAAQBAJ[details] Available for editors