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The early evolution of life: solution to Darwin's dilemmaRecent studies of Precambrian fossils indicate that life on Earth originated earlier than assumed, microscopic life was prevalent in the Precambrian Eon, the tempo and mode of evolution during the Precambrian period were different from other periods, and that only the Precambrian fossil record can be used as evidence of early life. Implications for future research include directing the search for the origin of life away from the geological record, modification of hypotheses about molecular change, use of Precambrian microfossils in dating younger geological units, and progress in defining the nature of major events in early evolution.
Document ID
20040089660
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
Authors
Schopf, J. W.
(University of California Los Angeles 90024, United States)
Date Acquired
August 21, 2013
Publication Date
October 1, 1994
Publication Information
Publication: Trends in ecology & evolution (Personal edition)
Volume: 9
Issue: 10
ISSN: 0169-5347
Subject Category
Geosciences (General)
Funding Number(s)
CONTRACT_GRANT: NAGW-2147
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Exobiology

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