The study suggests that the contact could have been trans-oceanic or a late-stage coastal migration that did not leave genetic imprints in North America.
这项研究暗示，这样的接触可能是跨大洋的接触，或者是一场晚期的海岸移民活动，并且这场接触没有在北美洲留下遗传学上的印记。