Why does having a superior religion provide an edge over atheists? As I asked, what about wars between people of the same religion?
What kind of religious evidence would neanderthals provide?
Years ago, I read about some neanderthal burials that contained red ochre, which had been deliberately added, and a large amount of pollen from flowers, plus some "grave goods." This suggested that some sort of ritual was involved; otherwise, why not just roll the body into a ditch?
Apparently, neanderthals weren't very artistic. They haven't found much in the way of paintings or sculptures that could be interpreted as spiritual - unlike Cro-magnon, but that doesn't mean neanderthals weren't religious.
Here's some additional info: Link