I don't know when the first pre Inca peoples arrived in South America but surely there could of been contact when the Cuviernouis was nearly extinct.
Here i found this
"On the eastern side of the Gateway of Sun, in the lowest row of the frieze, are several designs that seem to outline the head, ears, tusks and trunk of an elephant-like creature, which some people say might represent the New World proboscid Cuvieronius, which became extinct 12,000 years ago, at the end of the last ice age. Each ‘elephant’ is actually composed of the heads of two crested condors, placed throat to throat – the crests constitute the ‘ears’, and the upper part of the necks the ‘tusks’ (the condors forming half of the two ‘elephants’ can be seen on the far left and far right of fig. 7:14; see also the figures below). Graham Hancock argues that the ‘elephant’ may nevertheless be intentional as the Tiwanaku sculptors often used one thing to depict another – e.g. an ear on an apparently human face might turn out to be a bird’s wing."
Edited by The New Richard Nixon, 02 May 2013 - 02:35 PM.