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Charles Darwin and Natural Selection
Charles Darwin and Alfred Wallace
Both (a) Charles Darwin and (b) Alfred Wallace wrote scientific papers on natural selection that were presented together before the Linnean Society in 1858.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Understanding Evolution. October 16, 2013."
http://cnx.org/content/m44568/latest/Figure_18_01_02ab.jpg
OpenStax CNX
CC BY 3.0.