A strong correlation between "shovel shaped" incisors and those with a lot of "Mongolian" aka East Asian ancestry is made. Ditto for a different texture of ear wax and the eye folds are too obvious.
The entire history of "race" facinates me: I find it equally interesting and repelling. But if you skin and scalp a person, cut out the eye sockets and muscles around them and then throw away the teeth, you cannot determine "race" except by DNA and then you don't know what proportions of markers show up in skin/hair/eye color, etc.
Gerns, Guns, and Steel by Jared Diamond explores how geography more than anything else has affected human culture. For example, he asks a simple question "Why didn't Zulu warriors riding zebras sweep up into Eurasia?" The conclusion is that the zebra can't be domesticated, and Eurasia is the center of empire because of the combination of weather, native animals and plants that were domesticated and therefore where advanced civilization first flourished -- not that any culture is more or less "advanced" mentally or artistically than another, but that the "things" that Eurasians had at their disposal led to urbanization, metallurgy, and the close proximity of living with animals led to a great immunity to many diseases for Eurasians as an inheritance.
Indeed, what is amazing is that Diamond is an ethnobiolologist who was in New Guinea often on field work when a man asked him "Why have you got so much cargo and us not?" It took him several years and a book, but he tracked him down and said, "Here is why we have so much cargo and you not: geography and cattle, hogs, poultry, metal ore, and horses."