Big brains or big guts: Choose one

https://www.sciencedaily.com/releases/2019/08/190823080016.htm

A tiny skull fossil suggests primate brain areas evolved separately

https://www.sciencenews.org/article/skull-fossil-suggests-primate-brain-areas-evolved-separately

Going the Distance: Brain Cells for 3D Vision Discovered

https://www.natureworldnews.com/articles/41631/20190628/going-the-distance-brain-cells-for-3d-vision-discovered.htm