World Register of Marine Species (WoRMS)
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Globorotalia crassata (Cushman, 1925)&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=926603 on 2026-08-30
Cushman, J. A. (1925). An Eocene fauna from the Moctezuma River, Mexico. Bulletin of the American Association of Petroleum Geologists. 9: 298-303.