A new study seeks to explains why kangaroos and koalas never travelled from Australia to Asia, while other species were successful in travelling in the other direction.
The uneven distribution of animal species, such as kangaroos, is partly due to a change in ancient plate tectonics dating back 45 million years, ultimately leading to a continental collision, a biologist says.There is a new explanation of why Australia's unique marsupials such as the kangaroo and koala never made it to Asia, whereas other species were successful in travelling from north to south.
Wallace's Line is a hypothetical divider used to mark an uneven distribution of Australian and Asian creatures. "About 35 million years ago, Australia was located much further south and was connected to Antarctica," Skeels said."At some point in earth's timeline, Australia broke away from Antarctica and over millions of years drifted north, causing it to crash into Asia.The islands of Indonesia served as "stepping stones" for animals and plants that originated in Asia to reach New Guinea and northern Australia, and vice versa.
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