A History of Land Mammals in the Western Hemisphere

A scientific publication written in the early 20th century. This work delves into the evolutionary history and geographical distribution of mammals in North and South America, exploring their development from ancient ancestors to the modern forms found today. The book is intended for both lay readers and zoologists, aiming to present complex paleontological concepts in an accessible manner. The opening of the book introduces the origins and motivations behind its creation, highlighting the author's personal experiences with fossil collecting during his youth, which sparked a lifelong fascination with the subject. It discusses the initial steps of investigating mammalian history, emphasizing the importance of understanding both geological and paleontological methods in reconstructing past environments and life forms. The text outlines the challenges of making this rich history comprehensible to a broader audience, setting the stage for a detailed exploration of mammalian evolution, their classifications, and the fossil evidence supporting these concepts.