Dinosaurs, with Special Reference to the American Museum Collections. Questo articolo non è disponibile.Dinosaurs, with Special Reference to the American Museum Collections

D inosaurs, with Special Reference to the American Museum Collections" by W. D. Matthew is a scientific publication written in the early 20th century. It provides a comprehensive exploration of dinosaurs, focusing particularly on the specimens housed at the American Museum of Natural History. The book delves into the classification, characteristics, and historical significance of these ancient reptiles, offering a detailed perspective on their life and environment during the Mesozoic Era. The opening of this work introduces readers to the concept of paleontology and the vast geological timescales involved in the study of dinosaurs. It begins with a reflection on prehistoric life and the evolutionary significance of the Age of Reptiles, emphasizing the long periods of time that separated different species. The text outlines the framework of the book, hinting at various chapters that will explore North America's geology during the Age of Reptiles, the diversity and classification of dinosaurs, and details about specific genera and their ecosystems. Overall, it sets the stage for a detailed examination of the fascinating world of dinosaurs, combining rigorous scientific insights with engaging narratives drawn from museum collections.I TSANTIQUITY, DURATIONAND SIGNIFICANCE IN GEOLOGIC HISTORY. Palaeontology deals with the History of Life. Its time is measured in geologic epochs and periods, in millions of years instead of centuries. Man, by this measure, is but a creature of yesterday-his "forty centuries of civilization"[1] but a passing episode. It is by no means easy for us to adjust our perspective to the immensely long spaces of time involved in geological evolution. We are apt to think of all these extinct animals merely as prehistoric-to imagine them all living at the same time and contending with our cave-dwelling ancestors for the mastery of the earth. In order to understand the place of the Dinosaurs in world-history, we must first get some idea of the length of geologic periods and the immense space of time separating one extinct fauna from another. The Age of Man. Prehistoric time, as it is commonly understood, is the time when barbaric and savage tribes of men inhabited the world but before