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Microfossils Shed Light on Cretaceous/Palaeogene Extinction

Tiny Shelled Creatures Shed Light on Extinction and 
Recovery 65 Million Years Ago, Science Daily, March 1, 2010


âAn asteroid strike may not only account for the demise 
of ocean and land life 65 million years ago, but the 
fireball's path and the resulting dust, darkness and 
toxic metal contamination may explain the geographic 
unevenness of extinctions and recovery, according to 
Penn State geoscientists.â

Jiang, S. T. J. Bralower, M. E. Patzkowsky, L. R. Kump,
and J. D. Schueth, 2010, Geographic controls on 
nannoplankton extinction across the Cretaceous/Palaeogene 
boundary. Nature Geoscience, DOI: 10.1038/ngeo775



Paul H.