Erasmus Darwin (1731- 1802) - As a naturalist he formulated one of the first formal theories on evolution in Zoonomia or the laws of organic life. He also talked about how competition and sexual selection could cause changes in species.
Georges Cuvier (1769 - 1832) - He found Vertebrate Paleaontology as a discipline and created the comparative method of organismal biology.
Jean Bapatiste Lamarck (1744 - 1829) - They said he was a great zoologist and as a forerunner of evolution.
Thomas Malthus (1766 - 1834) - Theory of Natural Selection- Malthus's observation that in nature plants and animals produce far more offspring than can survive, and that Man too is capable of overproducing if left unchecked. Malthus concluded that unless family size was regulated, man's misery of famine would become globally epidemic and eventually consume Man. Malthus' view that poverty and famine were natural outcomes of population growth and food supply was not popular among social reformers who believed that with proper social structures, all ills of man could be eradicated.
Darwin believed that the earth changed over time and it formed into shapes such as islands and they go through a lot of changes.When Darwin went back to England he found out that his Finch's comprised 13 species.
He found out that the beaks change over time that gave him the question of evolution!!!
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