Wallace Line to the west of the Philippines. Wallace's studies in Indonesia demonstrated the emerging theory of evolution, at about the same time as Joseph Dalton Hooker and Asa Gray published essays also supporting Darwin's hypothesis. Understanding of the biogeography of the region centers on the relationship of ancient sea levels to the continental shelves. Wallace's Line is visible geographically when the continental shelf contours are examined; it can be seen as a deep-water channel that marks the southeastern edge of the Sunda Shelf which links Borneo, Bali, Java, and Sumatra underwater to the mainland of southeastern Asia. Australia is likewise connected
Cyrtostachys renda from harvest through implementing legislation. In 2000, the IUCN removed "Cyrtostachys renda" from its list of protected species. Cyrtostachys renda Cyrtostachys renda, also known by the common names red sealing wax palm and lipstick palm, is a palm that is native to Thailand, Malaysia, Sumatra and Borneo in Indonesia. It is the only species of the genus "Cyrtostachys" that can be found to the west of the Wallace Line, the faunal boundary separating the ecozones of Asia and Wallacea. "Cyrtostachys renda"s name is derived from several words: the Greek prefix κυρτό- ("cyrto-") meaning bent or curved, the Greek word σταχυς