[Geology2] Elephants Took 24 Million Generations to Evolve From Mouse-Size

I love when that happens . . .

Elephants Took 24 Million Generations to Evolve From Mouse-Size

Date: Fri, 10 Feb 2012 04:46:28 +0000

Elephants Took 24 Million Generations to Evolve From Mouse-Size 
National Geographic News, February 3, 2012 
 
Some mammals need roughly 24 million generations to go from mouse-size
to elephant-size, a new study says. Using both fossil and living
specimens, scientists calculated growth rates for 28 different mammalian
 
groups during the past 65 million years—and found that, for mammals,
getting big takes longer than shrinking. It takes a minimum of 1.6
million generations for mammals to achieve a hundredfold increase in
body size, about 5 million generations for a thousandfold increase, and
about 10 million generations for a 5,000-fold increase, the team
discovered. 
 
http://news.nationalgeographic.com/news/2012/02/120203-mammals-evolution-body-size-science-elephants-mice/ 
 
 
 

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