Paul S. Martin - Böcker

This study analyzes the ecological distributions of reptiles and amphibians in southern Tamaulipas of northeastern Mexico. Observations are confined to a small, though topographically complex, section of the Sierra Madre Oriental to enable a more careful definition of zonal distribution than would be possible had the same amount of fieldwork been expended in a larger geographical unit. Geology, climate, and vegetation are environmental features of primary concern to the animal ecologist, and this study discusses each of these in turn. Such information should clarify the environmental basis for certain distribution patterns both throughout eastern Mexico and, locally, in the Gomez Farias region. In addition it should be useful in comparing this with other peritropical areas.

As recently as 11,000 years ago - 'near time' to geologists - mammoths, mastodons, gomphotheres, ground sloths, giant armadillos, native camels and horses, the dire wolf, and many other large mammals roamed North America. In what has become one of science's greatest riddles, these large animals vanished in North and South America around the time humans arrived at the end of the last great ice age. Part paleontological adventure and part memoir, "Twilight of the Mammoths" presents in detail internationally renowned paleoecologist Paul Martin's widely discussed and debated 'overkill' hypothesis to explain these mysterious megafauna extinctions. Taking us from Rampart Cave in the Grand Canyon, where he finds himself 'chest deep in sloth dung', to other important fossil sites in Arizona and Chile, Martin's engaging book, written for a wide audience, uncovers our rich evolutionary legacy and shows why he has come to believe that the earliest Americans literally hunted these animals to death.As he discusses the discoveries that brought him to this hypothesis, Martin relates many colorful stories and gives a rich overview of the field of paleontology as well as his own fascinating career. He explores the ramifications of the overkill hypothesis for similar extinctions worldwide and examines other explanations for the extinctions, including climate change. Martin's visionary thinking about our missing megafauna offers inspiration and a challenge for today's conservation efforts as he speculates on what we might do to remedy this situation - both in our thinking about what is 'natural' and in the natural world itself.

What caused the extinction of so many animals at or near the end of the Pleistocene? Was it overkill by human hunters, the result of a major climatic change or was it just a part of some massive evolutionary turnover? Questions such as these have plagued scientists for over one hundred years and are still being heatedly debated today. Quaternary Extinctions presents the latest and most comprehensive examination of these questions. Geological Magazine-- ""May be regarded as a kind of standard encyclopedia for Pleistocene vertebrate paleontology for years to come."" American Scientist-- ""Should be read by paleobiologists, biologists, wildlife managers, ecologists, archeologists, and anyone concerned about the ongoing extinction of plants and animals."" Science-- ""Uncommonly readable and varied for watchers of paleontology and the rise of humankind."" Scientific American-- ""Represents a quantum leap in our knowledge of Pleistocene and Holocene palaeobiology...Many volumes on our bookshelves are destined to gather dust rather than attention. But not this one."" Nature-- ""Two strong impressions prevail when first looking into this epic compendium. One is the judicious balance of views that range over the whole continuum between monocausal, cultural, or environmental explanations. The second is that both the data base and theoretical sophistication of the protagonists in the debate have improved by a quantum leap since 1967."" American Anthropologist--