Isbn: 9780331990706 - fossils of the tertiary formations of the united states: illustrated by figures drawn from nature (classic reprint) (3 résultats)

PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000.

PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Etat : New. Print on Demand. This book documents the fossilized shells found in the Tertiary formations of the United States. The author, recognized for his extensive work in American geology, believes that the study of these fossils can illuminate the geological history of this region. The book begins with an overview of the geographic distribution of the Medial Tertiary Formation before describing the nature of the strata found there and the fossils embedded within them, including bivalves, gastropods, and some marine mammals. The author notes that the fossils in these formations closely resemble those found in present-day Gulf of Mexico, suggesting that the Tertiary inland sea once extended into that region. The author speculates that the extinction of many species was caused by a sudden fall in temperature at the end of the Medial Tertiary period. The insights in this book expand our understanding of the Tertiary period's geological processes and the evolution of life during that time. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. …