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Wallace Wal·lace (wŏl'ĭs), Alfred Russel. 1823-1913.
British naturalist who developed a concept of evolution that paralleled the work of Charles Darwin.
British naturalist who formulated a theory of evolution by natural selection independently of Charles Darwin. Wallace spent eight years (1854-62) traveling in Malaysia and assembling evidence for his theories, which he sent to Darwin in England. Their findings were first presented to the public in 1858.