Had a discussion about this with somebody the other day... Hello from another Tucson Grok-ette...I live in the Sonoran desert, where humans have left traces going back 11,000+ years (mammoth kill site). Most of the trees that grow here are actually big legumes: Mesquite, Palo Verde, Ironwood, Acacia all produce pods with "beans" and are part of the Fabaceae family. These legumes were a major source of calories for the indigenous peoples. From that perspective I have to put them in the paleo/primal bucket.
Mesquite in particular is ubiquitous in the Sonoran desert. The pod is actually the more edible part, as the "beans" are harder than rocks. Most modern harvesters put them through a mill which separates out the beans and tough fibers, and grinds the dried pods into a very nutritious flour.
I guess where I am going with this is Mark categorically puts legumes into the non-primal category, as from his perspective they were not part of the paleolithic human diet, yet they very much were in this part of the world.
On the other hand mesquite flour is very high in carbs. One cannot eat too much of this stuff and maintain a low-carb diet.
In general "Sonoran Grok" could have had a very high carb diet. Cactus fruit and agave were major calorie sources. There was not an abundance of large game, though it is seems that indigenous folks hung out near rivers where the prevalence of large mammals was higher than the surrounding territory.
Thoughts? Are paleo thinkers ignoring how people likely lived in this part of the world?