Paranthropus boisei had a larger, more robust skull with a prominent sagittal crest for muscle attachment, while Homo sapiens have a smaller, more gracile skull without a pronounced crest.
Homo sapiens have a more pronounced forehead and smaller cheekbones compared to Paranthropus boisei, who had a flatter forehead and larger cheekbones.
The teeth of Paranthropus boisei are larger and more adapted for chewing tough, fibrous vegetation, while Homo sapiens have smaller teeth adapted for a wider range of diets.
