When did life first appear on Earth and what form did it take? Rocks older than 3000 Ma should hold the answer to this intriguing question. The young Earth was, however, a very different place to that we know today and numerous pitfalls await our interpretation of this earliest rock record. This practical guide does what has never been attempted before – to bring together all the materials that have been claimed to comprise the earliest fossil record into an easily accessible format. This will be a handbook that every astrobiologist, and potentially every astronaut will wish to have in their backpack.
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David Wacey has been a member of the Department of Earth Sciences at Oxford University for 12 years. He graduated with honours from Worcester College, Oxford in 1998 and then undertook a D.Phil. investigating the geochemistry and microbiology of modern and ancient dolomite formation. It was during this time that he became interested in primitive microbes and how the earliest life on Earth may have arisen and evolved. On completion of his D. Phil he decided to concentrate his research on the earliest rocks found on Earth. He now works on a number of problems relating to the recognition and understanding of the earliest signs of life of Earth. More information can be found here: http://www.earth.ox.ac.uk/~davidwa/Wacey_profile.html
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