Two-phase increase in the maximum size of life over 3.5 billion years reflects biological innovation and environmental opportunity.
Proc Natl Acad Sci U S A. 2009 Jan 6; 106(1):24-7
Douglas Erwin
08 Jan 2009
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Interesting Hypothesis
Although it is obvious that the maximum size of organisms has increased since the origin of life, the pattern of this increase had not been clear until this new study, which shows the increases occurred largely in two bursts, about 1.9 and 0.5-0.45 billion years ago, coincident with increases in oxygen levels.
This study strongly...
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