Howler monkey ancestors began eating leaves 13 million years ago, changing course of primate history in South America

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 ...
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Howler monkeys began eating leaves 13 million years ago, changing primate history

An extinct relative of the howler monkey may have been the first leaf-eating primate in South and Central America ...
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New World monkeys the evolutionary odyssey Alfred L. Rosenberger

Cover -- Contents -- List of Illustrations -- Preface -- CHAPTER 1. What Is a New World Monkey? -- What is a monkey? -- What is a platyrrhine? -- Platyrrhines and catarrhines -- Platyrrhine taxonomy - ...

Circus-like performances by snow monkeys in Japan contradict their long-revered status

Considered messengers of the gods, the macaques are now made to wear costumes, do backflips, and walk on stilts to please crowds.