World Register of Marine Species (WoRMS)
Procerolagena flexa (Cushman & Gray, 1946)
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Procerolagena flexa (Cushman & Gray, 1946). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1636909 on 2026-08-29
Cushman, J. A.; Gray, H. B. (1946). Some new species and varieties of Foraminifera from the Pliocene of Timms Point, California. Contributions from the Cushman laboratory for foraminiferal research. 22(2): 65-69.