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by dzink 153 days ago
One reason for that might be the size of the baby homo sapiens scull/head upon birth. Bigger brain might have meant female Neanderthals couldn’t give birth to Homo Sapiens babies. Just a theory.
2 comments

Neanderthals had larger cranial capacity than modern humans.
Possibly not at birth?
You do realize that Neanderthals had significantly bigger brain sizes than Homo sapiens?