It offers excellent insight into the multi-disciplinary nature of biogeography, providing the student with a sound historical base, up-to-date factual content and a clear explanation of current controversies. New chapter on molecular evidence for the interpretation of patterns of biogeographyNew section on the biogeography of parasitic diseasesStrong use of references providing a platform for advanced students to follow further debate in the current literatureBalanced treatment of continental biogeography, island biogeography and marine biogeography

    Recent knowledge sheds new light on the top and bottom of the world, including answers to the mysteries of the ice ages. Isaac Asimoc explores the mystery of the polar regions in his most fascinating, informative science book yet. 80 illustrations.

    Introductory chapters describe the types of plant preservation and outline the development of such groups as ferns, fern allies, and seed plants including cycads, ginkgos, conifers, and flowering plants. Generic accounts include brief characterizations; one or more line drawings; lists of formations in which the fossil plant occurs; and, in some, discussions of the ecological conditions under which the plant may have grown. Half of the listings describe fossil woods. A table of more than one hundred localities from British Columbia to northern New Mexico and from California as far east as South Dakota lists the period and epoch in which each site's fossils probably originated. Because fossil plants are found worldwide, the book can be used in many areas other than the western United States.First published in 1975, this second edition has been completely revised and expanded to include more than 350 new or modified illustrations, an outline key, an amplified glossary, and discussion of seventy-nine additional genera of compressional and petrified material. For geologists, botanists, land managers, naturalists, and anyone interested in hunting and identifying fossil plants, this comprehensive guide is an indispensable reference.

    Distributed by the University of Nebraska Press for Caxton PressMen in search of treasure opened the gates to Oregon's wilderness and Oregon's Golden Years - with affection and good humor - honors these men and their imperishable lust for gold.