Sign Up You agree to receive occasional updates and special offers for The New York Times's products and services. View all New York Times newsletters. When the team was finished they had counted 29 in total, possibly belonging to two adults and a child. That would make them the oldest preserved human footprints in North America. If anthropologists are too busy searching for soles, toes and arches, they might miss clues from those who wore animal skin shoes.

Source: New York Times March 28, 2018 18:00 UTC