Ernst Haeckel's concept of an evolutionary origin of life.
In 1865/66 E. Haeckel for the first time suggested an evolutionary sequence in order to explain the origin of the first living cell. Haeckel's concept is compared with modern theories of the origin of life. It is evident that Haeckel has not as yet received the credit that he deserves for his evolutionary concept.
D005075:Biological Evolution; D049672:History, 19th Century