He Helped Discover Evolution, And Then Became Extinct Ask most folks who came up with the theory of evolution, and theyll tell you it was Charles Darwin. In fact, Alfred Russel Wallace, another British naturalist, was a co-discoverer of the theory — though Darwin has gotten most of the credit. Wallace died 100 years ago this year.
Charles Darwin studied 100's of exotic life forms of fossils. He felt like he was decoding natures complex web. Charles Darwin then started developing his theory that all creatures on earth are cousins of each other.