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Word: schopf (lookup in dictionary) (lookup stats)
Dates: during 1960-1969
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Usage:

...surprising first of all that anything was alive that far back," J. William Schopf, Junior Fellow, and co-discover of the fossil along with Elso S. Barghoorn, professor of Botany, said yesterday. "But more important was finding anything so complex as an apparently photosynthetic organism," Schopf added...

Author: By James C. Dinerstein, | Title: Biologists Find Oldest Fossil; Push Back Age of Photosynthesis | 5/1/1967 | See Source »

Barghoorn was assisted in the project by J. William Schopf, a third year graduate student in Biology...

Author: NO WRITER ATTRIBUTED | Title: Wee Fossil Detection Pushes Back Evolutionary Clocks a Billion Years | 11/6/1965 | See Source »

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