[Fred Nerks]

Asian, negroid, semetic...and Vikings, all found their way to Mexico? It certainly looks that way...

VIKING OR ROMAN? LINK

Doubt that Christopher Columbus's sailors were the first Old World inhabitants that made contact with American Indians is almost as old as the Spanish Admiral's discoveries. In the art and folklore of American's autochthonous towns there are several indications which make us think that some sporadic contacts occurred between civilizations on both sides of the Atlantic as early as the first millennium BC...

[blam]

I read one guys thoughts that the Olmecs were the first to have a 'Panama Canal' across Mexico. Goods were unloaded from ships on the Pacific side and carted overland where they were reloaded on ships in the Gulf Of Mexico for further transport.

That would also account for the presence of so many different racial groups in one spot at that time.

And, they all apparently appeared there fairly suddenly...I've read.

[SunkenCiv]

The “Roman” head is most interesting in the context of this topic; it was found in an American burial dating to the era of the Roman Empire.