Jomon pottery from the Hirajo shell midden (Late Jomon) and a skull from which ancient DNA was extracted. Credit: Shigeki Nakagome, Lead researcher, Assistant Professor in Psychiatry, School of Medicine, Trinity College Dublin
https://scitechdaily.com/ancient-dna-extracted-from-human-bones-rewrites-early-japanese-history-modern-day-populations-have-tripartite-genetic-origin/