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When we look at the baby-in-a-birth-canal problem, you can obviously go two ways: smaller baby head (and torso) or wider birth canal. Apparently Neanderthals h
by carterehsmith 10y ago
When we look at the baby-in-a-birth-canal problem, you can obviously go two ways: smaller baby head (and torso) or wider birth canal.
Apparently Neanderthals had wider pelvis _and_ larger heads/brains. So they kind of picked the #2 route.
- danieltillett 10y agoThe problem with pelvis expansion is it is hard to select for widening of the pelvis without upsetting walking and running. Development is hierarchical and bones are lower down in the heirachy than brain size. In regards Neanderthals I would not be surprised if it was wider pelvis that allowed for them to have larger brained babies. This is a fascinating area.