When you learned about the history of human evolution in school, there's a good chance you were shown one all-too-familiar image. That picture probably showed a conga line of human-like creatures, ...

The whites of your eyes are not an accident. They are, scientists now believe, one of the most sophisticated social ...

Thirteen million years ago, a group of medium-sized monkeys known for guarding their territory among the treetops with fearsome "howls" started doing something new. These monkeys, among the oldest ...

An extinct relative of the howler monkey may have been the first leaf-eating primate in South and Central America ...

Introduction / Christina J. Campbell -- Morphology and evolution of the spider monkey, genus Ateles / Alfred L. Rosenberger ... [et al.] -- The taxonomic status of spider monkeys in the twenty-first ...

The fossils were found in flooded caves in the Dominican Republic. The cache, including seven skulls, five mandibles (jawbones), and dozens of other skeleton parts, makes the fossil site, Cueva Macho, ...