Wallace Line by the Sahul Shelf to New Guinea. The biogeographic boundary known as Lydekker's Line, which separates the eastern edge of Wallacea from the Australian region, has a similar origin to the Wallace line. During ice age glacial advances, when the , both Asia and Australia were united with what are now islands on their respective continental shelves as continuous land masses, but the deep water between those two large continental shelf areas was, for over 50 million years, a barrier that kept the flora and fauna of Australia separated from those of Asia. Wallacea consists of islands that were not
Blue Line (TRAX) West 2700 South, before crossing under I-80. From I-80 the lines continue north and cross West Haven Avenue before the junction with the TRAX Green Line. The previous station for the Green Line is River Trail, having originated in West Valley City. Just after the junction all three lines head north and reach Central Pointe, which is just south of West 2100 South (SR-201). Central Pointe is the only TRAX station served by the S Line. The S Line platform is situated just southeast of the TRAX platform. (The S Line provides streetcar service east to the Fairmont stop in