Dictionary of Human Evolution and Biology

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Sunda Trench

Undersea channel in southeast Asia, deeper than 100 m and therefore a continuous body of water during most of the Pleistocene when more sea water was bound up in continental glaciers; the Sunda trench would have delimited the Sunda shelf. The trench itself would have presented a continuous water barrier, navigable only with rafts or boats.

See Wallace’s line.

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