Figure 4
From: From the scala naturae to the symbiogenetic and dynamic tree of life
Partial reproduction of the single illustration in Darwin's Origin of Species of 1859 (6. ed. 1872). This famous diagram may have been inspired by corals (or coral-like organisms) as depicted in Figure 3 B, C. Darwin's five theories are added to the figure (1. to 5.), which illustrate the transformation and diversification of species, which originate from a common ancestor (A) [adapted from ref. 7].