




This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original...

Tertiary Mammal Horizons of North America is a book written by Henry Fairfield Osborn and published in 1907. The book is a comprehensive study of the mammalian fossils found in North America during the Tertiary period, which is the time period between 66 million and 2.6 million...