The paper I read mentioned the chachapoya interms of then having some rare genetic sequence that they share with some other population not in the Andean region. I'm going keep looking for it.
As to the dentition, yes they do share shoveling on the incisors, a trait that is part of the sinodont dental complex, that most native Americans share.
The discussion of dentition muddies up the waters of human dispersal, because it shows a direction of movements contrary to the accepted .
A few years ago when I first learned that modern humans can be classified into types based on dentition, I was fascinated. There are certain traits of teeth shared by native Americans and north east asians called sinodonty, in contrast there is sundadonty that is found among the people of south east Asia and oceana.
It is the extreme shoveling in north east asians that gives us that iconic stereotype of the buck toothed Asian.
Interesting thing is that much of the sinodont complex is also an archaic set of traits shared with Asian homo erectus.
Here's an interesting discussion of the east-west decrease in shoveling and its implications.
Odontology is a subdiscipline of physical anthropology with a special swagger. With a strong genetic basis, functional independence of traits, their evolutionary stability, clear geographic patterning and easy comparability of ancient and modern samples, odontology can give evolutionary craniology and even population genetics a run for their money. I remember in 2003, at the Memorial Joseph Greenberg Conference in Stanford University, Christie Turner, the patriarch of American evolutionary odontology, in a lounge discussion, prided on the stability of dental traits compared to “Cavalli’s neutral genes,” which in his opinion spread around and mixed-and-matched in the last 20,000 years. Many odontologists believe that dental patterns reflect ancient population processes better than evolutionary craniology.