Yeah, apparently marsupials first arose in North America and then migrated by some mechanism to Australia. Placental mammals arrived or also arose on North America as well which is why our marsupials are so…just opossums. But there were no mammals on Australia so they spread to many niches.
I believe opossums are America’s only marsupial.
Yeah, apparently marsupials first arose in North America and then migrated by some mechanism to Australia. Placental mammals arrived or also arose on North America as well which is why our marsupials are so…just opossums. But there were no mammals on Australia so they spread to many niches.