Wallace's line

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Related to Wallace's line: Alfred Russel Wallace

Wallace's line,

imaginary line postulated by A. R. WallaceWallace, Alfred Russel,
1823–1913, English naturalist. From his study of comparative biology in Brazil and in the East Indies, he evolved a concept of evolution similar to that of Charles Darwin.
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 as the dividing line between Asian and Australian fauna in the Malay Archipelago. It passes between Bali and Lombok islands and between Borneo and Sulawesi, then continues S of the Philippines and N of the Hawaiian Islands.
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(31) Ten Kate's commissioned expedition is thus revealing of the centrality of Timor as regards the problem of Wallace's line. Between 1890 and 1893 Ten Kate travelled and collected numerous materials in the west and centre of Timor Island; in 1893-94 the first results of his field anthropometry were published as articles in L'Anthropologie then the main French journal on racial science.
(49) Verneau read Fonseca Cardoso's evidence and Correia's 'interesting conclusions' on the Oecussi Malayan type principally as a means to resume the old French case (made first by his mentors Quatrefages and Hamy in the 1870s) against Wallace's line: 'contrarily to Wallace,' he observed, 'it is not the Papuan, Melanesian or Australian element that predominates in the whole island.' (50) The Portuguese evidence proved Wallace's anthropological categorising wrong about Timor Island.
He said that the only place where such a genetic signal exists appears to be in areas east of Wallace's Line and that is where we think interbreeding took place - even though it means that the Denisovans must have somehow made that marine crossing.
From Wallace's Line to the Front Lines of the Explosive Struggle for the World's Richest Underwater Treasures
Named for the 19th century explorer-naturalist Alfred Wallace, Wallace's Line is at the heart of the sprawling Indonesian archipelago, one of the world's richest storehouses of biological diversity--both on land and under water.
In 1869 he drew a line separating the two types of animals (a line still called Wallace's line), which followed the deep-water channel between the large islands of Borneo and Bali to the west and Celebes and Lombok to the east.
A mysterious ancient relative of modern humans somehow managed to find a way to cross Wallace's Line, one of the world's most prominent marine barriers in Indonesia.