Literature
Authors(s) Brummer G.J.A., Hemleben Ch., Spindler M.
Year 1987
Title Ontogeny of extant spinose planktonic Foraminifera (Globigerinidae), a concept exemplified by Globigerinoides sacculifer (Brady) and G. ruber (d'Orbigny). Mar. Micropaleontol., 12:357-381.