The theory of evolution by natural selection was proposed by Charles Robert Darwin and Alfred Russel Wallace in 1858.

This is not the currently accepted theory as that was 157 years ago. Google The new synthesis, or the Neo-Darwinian synthesis for an update to the theory of evolution by natural selection.

Neo-Darwinism is the modern version of the Darwinian theory of evolution, which incorporates the principles of genetics to explain how inheritable variations can arise by mutation. Darwin did not have any knowledge of modern genetics and this idea puts the two together.

In looking for a logo, an ape would epitomize the Darwinian theory of evolution.

The Neo-Darwinian theory includes knowledge of Mendelian and modern molecular genetics. It is, in essence, still the same theory, but refined, expanded to include new understanding.

Darwinian evolution is descent with modification and natural selection, or, in other terms, reproductive variation and differential reproductive success.