In the 1970 's he and Stephen Jay Gould , the Harvard University paleontologist who died in 2002 , developed the theory of punctuated equilibria in evolution : the notion that transitions in species take place periodically -- during intense periods of activity -- and not necessarily as part of a steady , gradual process .
Stephen Jay Gould /business/person/company Harvard University
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Stephen Jay Gould
PERSON
Harvard University
ORGANIZATION
/business/person/company