The plants on South/North America could have relatives left over
from Pangaea that could be similar enough to carry similar nutritional
value.  Corn is a cousin of rice for example.

Well.. at least that's my take on it.

Zack




On Thu, Mar 1, 2012 at 4:20 PM, Geoffrey Purcell
<[log in to unmask]>wrote:

> Not necessarily. I mean, if some of those who had emigrated to the New
> World from Europe 26,000 years ago had then returned to Europe after some
> more  millenia of adaptation, then presumably, Europeans  would have
> adapted to New World foods like potatoes. And, of course, since scientific
> data from the Palaeolithic era is extremely sparse, we might well find, in
> a few decades, that those dates given were wrong, and that human
> colonisation of the New World went even further back.
>
> Geoff
>
>
>
> "But the big killer here
> is none of those early paleo people that made it to the New World
> were our ancestors."
>