RSoJS proposes that the “Sojin” (Paleolithic maritime ancestors from Japan) reached the Americas via the Migration along Pacific Ocean Rim (MPOR), challenging the single-wave model. This research integrates DNA (Population Y) and lithic technology.
[Right Side] The Coastal Route and the First Americans Recent DNA analysis showing affinities between Southern Asia and South America, combined with archaeological evidence, increasingly supports the Coastal Route hypothesis. A leading candidate for this movement is the Hokkaido Sojin (originating from the Mutsu Plain in Aomori). Their maritime adaptation and the similarities found in American Paleolithic artifacts highlight the significance of the Coastal Dispersal History of Modern Humans (RSoJS).
[Left Side] The Dual-Structure Dispersal in Eastern Asia Following the “Out of the Middle East” expansion, Eastern Asia was shaped by two distinct waves:
Wave #1 (The Inmalaid Dispersal): Having originated in the Middle East and subsequently starting their migration from Southeast Asia approximately 70,000 years ago, these populations moved northward. They spread throughout the Japanese archipelago, reaching Hokkaido and further north by 35-30,000 years ago.
Wave #2 (The Mongoloid Dispersal): A later, powerful second expansion resulting from the hybridization of Northern-route populations from Central Asia and the earlier northward-moving Inmalaids. These groups underwent physical adaptations to cold climates, developing the Mongoloid features that remain dominant today.
Note on DNA Similarities: This dual-structure model explains the unique, ancient DNA similarities shared between the Japanese archipelago and the remote Eastern Tibetan highlands—often referred to as a “landlocked island.” #祖人
1. Maritime Subsistence and Intelligence (38,000 years ago) The Sojin (Pre-Jomon) engaged in seafaring voyages to remote islands in the Izu region in search of obsidian. This demonstrates the advanced intelligence required for boat building and navigation.
2. Pit-Trap Hunting (35,000 years ago) The use of pit traps reflects high cognitive ability in strategic placement and the physical labor required for excavation without metal tools, suggesting a structured social organization.
3. Social and Spiritual Life (35,000 years ago) Their campsite structures indicate a social and spiritual framework akin to that of Native American cultures.
4. Pioneering Lithic Technology The Sojin utilized “polished” (ground) stone tools approximately 20,000 years earlier than the western world.
5. World’s Oldest Fishing Hooks (23,000 years ago) Evidence shows they were the first to catch fish using hooks, marking the earliest known traces of this technology.
(Conclusion) With the discovery of Australasian DNA (Population-Y) in South America, it is now theorized that the First Americans migrated south along the western coast of the New World. Consequently, the seafaring Hokkaido Sojin have gained significant attention. Their DNA shows affinities with the southern Inmalaid people, leading to the “Pacific Rim Migration Theory.”