Phil > That still leaves squash, which are from the family
cucurbitaceae, rather than nightshade, as well as other New World foods
that are generally considered Paleo, such as...
> avocado
> guava
> papaya
> pecan
> pineapple
> sunflower
> turkey

Again, the standard is whether a particular food was of the same type,
however defined, as consumed for many hundreds of thousands of years. 
Bison's close enough.  But is cocao?

Jim