World Register of Marine Species (WoRMS)
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Ammotium cassis (Parker, 1870). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=114029 on 2026-08-29
Dawson, G.M. (1870). On foraminifera from the Gulf and River St. Lawrence. Canadian Naturalist and Quaterly Journal of Science. 5: 172-180.