ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Although the base of the Phanerozoic is an important date in the history of life and of the Earth's crust, few conclusive data have been available to estimate the numerical age of this boundary. Accurate and reliable modern data now exist, however, and those relevant modern radiometric dates ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/301021a0
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