World Register of Marine Species (WoRMS)
Gyroidinoides goudkoffi (Trujillo, 1960)
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Gyroidinoides goudkoffi (Trujillo, 1960)&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1506932 on 2026-08-01
Trujillo, E. F. (1960). Upper Cretaceous foraminifera from near Redding, Shasta County, California. Journal of Paleontology. 34: 290-346.