15Evolution of homo sapiens refers not only to the last part of evolution, the sapiens sapiens, which is built/grounded back to probably at least 3,5 billion years ago when single-celled organisms existed (https://news.nationalgeographic.com/news/2010/05/100513-science-evolution-darwin-single-ancestor/). This means that our brain evolution preferably can be dated back to vertebrates evolution half a billion years ago. We can either use the tribune approach (MacLean) or think in terms of natur and culture and refer to culture as the transition from increased epigenics interfacing genes adjustment to environmental requirements opening up for culture as social shaping individuals into inter group attitudes/values/behaviors creating also encounters sharing evolvements more and more spirituality-like processes inom communities where inter personal represented in kinship “answer” needed security in a challenging unsafe habitat … more is coming ..
Links:
http://www.bbc.com/future/story/20190418-how-and-why-did-religion-evolve