[PDF.38sp] Packrat Middens: The Last 40,000 Years of Biotic Change (Garland Studies in Entrepreneurship)

Over the past thirty years, late Quaternary environments in the arid interior of western North America have been revealed by a unique source of fossils: well-preserved fragments of plants and animals accumulated locally by packrats and quite often encased, amberlike, in large masses of crystallized urine. These packrat middens are ubiquitous in caves and rock crevices throughout the arid West, where they can lie preserved for tens of thousands of years. More than a...

You can specify the type of files you want, for your gadget.Packrat Middens: The Last 40,000 Years of Biotic Change (Garland Studies in Entrepreneurship)   |  From University of Arizona Press. I have read it a couple of times and even shared with my family members. Really good. Couldnt put it down.