Or anything, heck, it is true, I just don't get it.
Opossums are marsupials, and the obviously live in North America.
Tell me of any other modern marsupials that are not found in Austrialia, I am curious to know of any more. I did not read Rich's biogeographical argument, so I shall make no claims to be supporting it. Marsupials support both the claim that the earth is ancient and that evolution occured. Since both mammals and marsupials exist on other continents, some situation must have arisen to account for this exceptional situation. Tectonic theory predicts that some time ago austrailia was connected to the rest of the continents before becoming an island.