Marsupial bones unossified.

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No, an alpaca is not a marsupial.

No. The star-nosed marsupial is not a marsupial, but a placental mammal. The only marsupial moles are found in northern Australia.

The Virginia Opossum is one animal that fits that description.

There is no such animal as the "southern marsupial".

However, if there was such an animal, it would mist likely be a marsupial. The vast majority of marsupial species are nocturnal.