The Pleistocene of North America and its vertebrated animals from the states east of the Mississippi River and from the Canadian provinces east of longitude 95°

"The Pleistocene of North America" by Oliver P. Hay is a science publication that studies the Pleistocene epoch, with an emphasis on North America east of the Mississippi River. The beginning of the book introduces the research into the Pleistocene geology and vertebrate animal life of North America. It talks about how important fossil discoveries are and the need to understand the geological context in which these fossils were discovered. This part gives an overview of the different parts of the Pleistocene, laying the groundwork for a review of interglacial periods, glacial cycles, and their effects on vertebrate animal evolution. The book carefully looks at the era, showing a lot of information and insights throughout the scientific publication.