One of the greatest mysteries in reconstructing the history of life on Earth has been the apparent absence of fossils dating back more than 500 million years. We have long known that fossils of sophisticated marine life-forms existed at the dawn of the Cambrian Period, but until recently scientists had found no traces of Precambrian fossils. The ...
One of the greatest mysteries in reconstructing the history of life on Earth has been the apparent absence of fossils dating back more than 550 million years. We have long known that fossils of sophisticated marine life-forms existed at the dawn of the Cambrian Period, but until recently scientists had found no traces of Precambrian fossils. The ...
The proceedings of the March 1997 symposium on Evolution! Facts and Fallacies are published in this short, accessible, and profusely-illustrated text. When Darwin originated his concept of descent with modification by means of natural selection, evolution became the instant focus of uncertainty and debate. In Evolution! noted experts sort facts ...
Always a controversial topic, the origin of life on Earth was considered taboo as an area of inquiry for science as recently as the 1950s. Since then, however, scientists working in this area have made remarkable progress, and an overall picture of how life emerged is coming more clearly into focus. We now know, for example, that the story of life ...
The Proterozoic Biosphere is the first major study of the paleobiology of the Proterozoic Earth. It is a multidisciplinary work dealing with the evolution of the Earth, the environment, and life during the forty percent of Earth's history that extends from the middle of the Precambrian eon (2500 Ma) to the beginning of the Paleozoic era (550 Ma). ...
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