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by Javantea — Oct 2, 2012


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This indicates that Australidelphia arose in South America, and reached Australia after Microbiotheria split off.

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This indicates that Australidelphia arose in South America ( along with the ancestors of all other living marsupials ), and probably reached Australia in a single dispersal event after Microbiotheria split off.

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This indicates that Australidelphia arose in South America along with the other major divisions of extant marsupials, and likely reached Australia via Antarctica in a single dispersal event after Microbiotheria split off.

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