Book excerpt: This volume provides a survey and synthesis of current knowledge of the more than 650 species of land and marine mammals found in Ecuador, Peru, Bolivia, and Brazil, as well as information on the mammalian fossil record, current biodiversity, and biogeography of this region. Chapters present up-to-date taxonomic information, ecological and behavioral characteristics, conservation status, and distribution maps for most species. Copyright © Libri GmbH. All rights reserved.