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Leaf fossils show severe end-Cretaceous plant extinction in Patagonia


Surprising species-level extinction millions of years ago may have reached as high as 92%
Plants that grew in both the Cretaceous and Paleogene periods.
January 11, 2021
The asteroid impact 66 million years ago that ushered in a mass extinction and ended the dinosaurs also killed off many of the plants they relied on for food. Fossil leaf assemblages from Patagonia suggest that vegetation in South America suffered great losses but rebounded quickly, according to researchers funded by the U.S. National Science Foundation. The results of the study, the first of its kind in the Southern Hemisphere, appear in the journal
Every mass extinction event is like a reset button, and what happens after that reset depends on which organisms survive and how they shape the biosphere, said Elena Stiles of the University of Washington. All the biodiversity that we observe today is related to the organisms that made it past the last big reset 66 million years ago. ....

United States , Christopher Schneider , Peter Wilf , Elena Stiles , Division Of Environmental Biology , University Of Washington , Research News , Nsfpublic Affairs , Us National Science Foundation , South America , Southern Hemisphere , Penn State , Northern Hemisphere , North America , National Science Foundation , ஒன்றுபட்டது மாநிலங்களில் , கிறிஸ்டோபர் ஶ்நைடர் , பீட்டர் வில்ஃப் , எலெனா ஸ்டைல்ஸ் , பிரிவு ஆஃப் சுற்றுச்சூழல் உயிரியல் , பல்கலைக்கழகம் ஆஃப் வாஷிங்டன் , ஆராய்ச்சி செய்தி , எங்களுக்கு தேசிய அறிவியல் அடித்தளம் , தெற்கு அமெரிக்கா , தெற்கு அரைக்கோளம் , பென் நிலை ,