Caro Seashell Collection - Ovulidae
Hardy's Guide to Marine Gastropods - Ovulidae
Eurasia Shells - Ovulidae
Lorenz - Photos of Living Ovulidae
Malacolog - Ovulidae
Micro Shells - Ovulidae
Natural History Museum Rotterdam - Ovulidae
Sea Slug Forum - Ovulidae
The Seashells of New South Wales - Ovulidae
Underwater Kwajalein - Ovulidae