Phylogeny, molecular dating and zoogeographic history of the titi monkeys (Callicebus, Pitheciidae) of eastern Brazil

A recent research investigated the validity of the taxonomy of Titi monkeys endemic of South Amerika . The results of the study indicate that at about 12 Ma, the ancestor of these New World primates occupied a wide area in South Amerika extending from the Amazon forest to the South of the Atlantic forest. It is suggested that Callicebus genus diverged from the amazonian titi monkeys during the late Miocene when the Savannah arose and separated the two forests. Through the DNA analysis, the results confirm the classification of the genus Callicebus which diversified in 5 species at about 5 Ma.

Published paper: https://www.sciencedirect.com/science/article/pii/S1055790316304250

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