Book excerpt: This comprehensive guide to primates of the world examines the evolutionary links and differences between primates, from tiny marmosets and bushbabies to massive gorillas-and us. The book is structured according to the four main branches of the primate family tree and contains expert information on the natural history, characteristics, and behavior of over 250 species, along with maps showing the range of the species. An introductory chapter presents the latest research on primatology, from conservation issues to evolution. Stunning photographs from primatologist Ian Redmond and colleagues, cladograms, and maps make this an essential guide to primates.