Todd, R. (1970). Maastrichtian (Late Cretaceous) foraminifera from a deep-sea core off southwestern Africa. Revista Española de Micropaleontología. 2: 135-154.
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Todd, R.
1970
Maastrichtian (Late Cretaceous) foraminifera from a deep-sea core off southwestern Africa
Revista Española de Micropaleontología