A series of primate illustrations to accompany the article The First Major Primate Extinction: An Evaluation of Paleoecological Dynamics of North American Stem Primates Using a Homology Free Measure of Tooth Shape. (American Journal of Anthropology) The article describes how tooth shape allow us to identify remains very different from our modern idea of "primate" as belonging to our primate family. 

  Carpolestes simpsoni

Carpolestes simpsoni

 Rhesus macaque

Rhesus macaque

 Lowland gorilla

Lowland gorilla

 Ring-tailed lemur 

Ring-tailed lemur