Fossil Horses

The horse has frequently been used as a classic example of long-term evolution because it possesses an extensive fossil record. This book synthesizes the large body of data and research relevant to an understanding of fossil horses from perspectives such as biology, geology, paleontology.

This book provides an update on the phylogeny, systematics and ecology of horses in South America based on data provided over the past three decades. The contemporary South American mammalian communities were shaped by the emergence of the Isthmus of Panama and by the profound climatic oscillations during the Pleistocene. Horses were a conspicuous group of immigrant mammals from North America that arrived in South America during the Pleistocene. This group is represented by 2 genera, Hippidion and Equus, which include small species (Hippidion devillei, H. saldiasi, E. andium and E. insulatus) and large forms (Equus neogeus and H. principale). Both groups arrived in South America via 2 different routes. One model designed to explain this migration indicates that the small forms used the Andes corridor, while larger horses used the eastern route and arrived through some coastal areas. Molecular dating (ancient DNA) suggests that the South American horses separated from the North American taxa (caballines and the New World stilt-legged horse) after 3.6 - 3.2 Ma, consistent with the final formation of the Panamanian Isthmus. Recent studies of stable isotopes in these horses indicate an extensive range of 13C values cover closed woodlands to C4 grasslands. This plasticity agrees with the hypothesis that generalist species and open biome specialist species from North America indicate a positive migration through South America.

Everything you were taught about evolution is wrong.

A comprehensive, richly illustrated introduction to the fascinating natural history of the horse, from prehistory to the present There are countless books about keeping and riding horses. The Horse is different: it looks not only at the natural history of the horse in the context of its use by humans, but also at its own, independent story, describing the way horses live, think, and behave both alongside people and on their own. Beautifully designed and illustrated, The Horse provides an engaging and accessible introduction to these beloved animals. Beginning with evolution and development, The Horse tells how horses came into being more than fifty million years ago and were first domesticated more than five thousand years ago, eventually spreading across the globe. Chapters on Anatomy & Biology and Society & Behavior explain equine anatomy and how it has affected the lives and social structure of horses, and outline current scientific thinking on their behavior as individual and herd animals, including information on communication between horses. A chapter on Horses & People provides a thorough overview of the horse’s many important roles in human history and today, from pack animal to sporting champion. Finally, the book ends with an engrossing and visually stunning photographic gallery of some fifty popular breeds of horses and ponies with essential information about each. Filled with surprising facts and insights, this book will delight anyone who loves horses and wants to understand them better. Provides a comprehensive, richly illustrated introduction to the evolution, development, domestication, and behavior of the horse—from life cycle, breeding, coats and colors, and the senses to courtship, parenting, communication, emotions, and learning Tells the full story of horses, from their earliest fossil ancestors to the modern-day Equus Offers a detailed survey of how horses and humans have interacted since horses were domesticated, including their use for work and war in the past and recreational and competitive riding today Features infographics, diagrams, and more than 250 stunning color photographs Includes a beautiful photographic directory to some 50 popular breeds

Competition Science Vision (monthly magazine) is published by Pratiyogita Darpan Group in India and is one of the best Science monthly magazines available for medical entrance examination students in India. Well-qualified professionals of Physics, Chemistry, Zoology and Botany make contributions to this magazine and craft it with focus on providing complete and to-the-point study material for aspiring candidates. The magazine covers General Knowledge, Science and Technology news, Interviews of toppers of examinations, study material of Physics, Chemistry, Zoology and Botany with model papers, reasoning test questions, facts, quiz contest, general awareness and mental ability test in every monthly issue.