I read a post on an anthropology channel about Elliot Smith and hyperdiffusionism, which among other things hints at the penetration of Egyptian culture into America, explained by the presence of images of elephants in Mesoamerican art…

I shall not hold forth at length on Mesoamerican art and Egypt, still less on the views of Elliot Smith. I will say only that there were, of course, elephants in America. And of the most various kinds. If we speak of the family Elephantidae proper, America was widely populated by mammoths in great variety and by palaeoloxodons, that is, straight-tusked elephants, which at first glance are scarcely distinguishable from the genera of modern elephants. Cuvieronius, for example, differs only in the shape of its tusks. And that is to say nothing of the great variety of proboscideans in general, the various gomphotheres, say. Many of these "little elephants" were still alive when the first Americans arrived; in the Pleistocene, at any rate, they still inhabited both continents