> If they crossed using land bridge from NE Indian Subcontinent during Last Glacial Maximum (LGM) then it's likely 26,500 years and 19–20,000 years ago(Accordin

> If they crossed using land bridge from NE Indian Subcontinent during Last Glacial Maximum (LGM) then it's likely 26,500 years and 19–20,000 years ago(According to Wiki) The 50K date I quoted is based on genetic studies - the Andamanese separated from the AASI (and the Aborigines) about 50K years ago. That's in line with the arrival of the Aborigines in Australia, so its possible the Andamanese are a remnant of the same expansion. I suspect the Andamanese arrived to the islands very early on, rather than a LGM arrival date, since unlike the high levels seen in Aborigines, the Andamanese have no Denisovan ancestry at all. Considering the high levels of Denisovan ancestry that radiates outwards from the former Sundaland, I'm not sure the proto-Andamanese could have hung out in Burma for 20K before crossing the LCM landbridge without picking up some Denisovan DNA. Of course, this is simply conjecture at this point. > * Newer linguistic studies claims to have found proto-Dravidian languages in Indus Valley Civilization* For what its worth, I found the paper unconvincing. I've read prior works (notably Krishnamurthy, cited in the paper), and unlike those papers, the argument here is based on a single root word. Besides, even if the root word originated in the IVC (quite possible), it doesn't rule out that it was a loan word into proto-Dravidian as well from a non-Dravidian IVC - just like in Akkadian. I am less familiar with proto-Dravidian and more with proto-Indo-European (PIE), and at least with PIE there's been considerable scholarship suggesting significant loan words into it from proto-Altic & proto-Caucasian. PIE when it formed was already a messy mishmash, with Hittite & Tocarian probably splitting off even before PIE formed. With the proto-Dravidian scholarship, I sense the desire to treat it as a monolith. Proto-Dravidian likely had just as much loan into it as out. IVC words could have survived as loan words into proto-Dravidian, without the IVC itself being proto-Dravidian.