Alfred Russel Wallace (1823-1913) was a British naturalist, explorer, geographer, anthropologist and
He is best known for independently proposing a theory of evolution due to natural selection that prompted Charles Darwin to publish his own theory.
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, one in which animals closely related to those of Australia are common, and one in which the species are largely of Asian origin.
He was considered the 19th century's leading expert on the geographical distribution of animal species and is sometimes called the "father of biogeography".
For more details about Wallace contribution to Evolutionary Biology please go here.