our brainless ancestors
a restoration of what a Kimberella might look like
[O]ur most recent common ancestor with octopus might have looked something like this... more like an octopus than a human. Our most recent common ancestor was some kind of soft-bodied blob that existed well over half a billion years ago and had no head, no eyes, and only a very basic, decentralized nervous system. In other words, our common ancestor had no brain.
