OM, FRS (8 January – 7 November 1913) was a British naturalist, explorer, geographer, anthropologist and biologist. He is best known for independently conceiving the theory of evolution through natural selection, which prompted Charles Darwin to publish his own ideas in On the Origin of Species. Wallace did extensive fieldwork, first in the Amazon River basin and then in the Malay Archipelago, where he identified the Wallace Line that divides the Indonesian archipelago into two distinct parts, a western portion in which the animals are largely of Asian origin, and an eastern portion where the birds and mammals are more similar to those of Australia. He was considered the 19th century's leading expert on the geographical distribution of animal species and is sometimes called the "father of biogeography". Wallace was one of the leading evolutionary thinkers of the 19th century and made many other contributions to the development of evolutionary theory besides being co-discoverer of natural selection. These included the concept of warning colouration in animals, and the Wallace effect, a hypothesis on how natural selection could contribute to speciation by encouraging the development of barriers against hybridization.
[The Guardian] - Alfred Russel Wallace was also working on evolution, though Darwin did marginally outstrip him; it wasn't actually Alexander Fleming but an aide who discovered the mouldering saucer that led to the penicillin, and so on. It happens even more often if
[Telegraph.co.uk] - The story begins in the aching, splitting, fevered head of the Victorian naturalist Alfred Russel Wallace. He came up with idea of natural selection on his malarial sickbed while collecting specimens in Malaya, and wrote it down in a letter that