Obercassel skulls, [25].

Obermaier, H., [20].

Obi, [72], [157].

obsidian, [34], [35], [40], [41].

Odessa, [64].

Odin, [160].

Ofnet, [24], [30], [61], [67].

Old England, [101], [130].

Old World, [85].

Ombri, [163].