Cornelis Willem Drooger

• Foraminifera of the Orinoco-Trinidad-Paria shelf
• Messinian events in the Mediterranean
• Problems of detailed biostratigraphic and magnetostratigraphic correlation in the Potamidha and Apostoli sections of the Cretan Neogene
• Radial foraminifera
• Smaller radiate nummulites of Northwestern Europe
• Study of American Miogypsinidae
• The microfauna of the Aquitanian-Burdigalian of southwestern France
• The punctuation in the evolution of Orbitoides in the campanian of south-west France