Fathers Have Been Older Than Mothers For 250,000 Years, Study Finds
www.sciencealert.com
Scientists have discovered a new way to identify the average ages when men and women reproduced throughout human evolutionary history.

The average Homo sapiens father has always been older than the average Homo sapiens mother, the study found, with men becoming parents at 30.7 years old, versus 23.2 years for women.

It's interesting that this trend extends even past the agricultural evolution, back during the "communistic" hunter-gatherer societies.