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Homo sapiens evolved in Africa approximately 300,000 to 200,000 years ago, leaving the continent using many routes. However, it's long been thought that they used a southern crossing via the Red Sea from the horn of Africa to get to southwestern Arabia. A new study hints at another route from the North.
“The dispersal route via the northern corridor from the Sinai Peninsula to the Levant and to Arabia has been considered an optimum route as it was the only terrestrial route out of Africa. Dated fossils and archaeological evidence strongly supported the use of this corridor,” said the study.The researchers say it was a ‘well-watered corridor’ allowing travelers to use it as their base for resting and hunting food.
“Although previous studies have looked for large lakes as potential watering holes, in fact small wetlands were very important as staging posts during the migration,”To conduct research on the hand tools uncovered in the Jordan Rift Valley, the team used luminescence dating techniques to find out which period the tools belonged to and how long they had been buried. This method estimates how long it has been since sediment was last exposed to light, said the press release.
“The paleohydrological evidence from the Jordan desert enhances our understanding of the environmental setting at that time. Rather than dry desert, savannah grasslands would have provided the much-needed resources for humans to survive during their journey out of Africa and into southwest Asia and beyond,” said Dr. Mahmoud Abbas, the study’s lead author from Shantou University, China.Homo sapiens dispersed from Africa into Eurasia multiple times in the Middle and Late Pleistocene.
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