Quote:
Originally Posted by HarryT
It's more than a hypothesis - it's supported by plenty of hard evidence. Eg, analysis of the oxygen content of mud in core-samples taken from below the Bering Strait conclusively shows that it was dry land for a period of many tens of thousands of years. During the last ice age, sea levels were at least 50m lower than they are today.
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Dry land perhaps, but dry land covered by miles deep ice?
My problem is not that there wasn’t a landbridge, but that given the conditions that caused it; it would have been less amenable to migration than open ocean. And in fact even today there is an ice bridge during part of the year and you don’t see anyone migrating across that!