An ancient dog fossil helps trace humans’ path into the Americas

A roughly 10,000-year-old bone found in southern Alaska is among the Americas’ oldest dog fossils

scientist holding small piece of ancient dog bone

Flavio Augusto da Silva Coelho of the University at Buffalo in New York holds a roughly 10,000-year-old dog bone fragment that was found in southeast Alaska. It’s one of the oldest dog fossils ever found in North America.

Douglas Levere/Univ. at Buffalo

An ancient bone from a dog, discovered in a cave in southeast Alaska, hints at when and how humans entered the Americas at the end of the Ice Age.