Yep. Didelphis virginiana (Virginia opossum). note that it is opossum with an "o" unlike the Aussie possum (no "o"). The Virginia opossum is a true marsupial with a well developed pouch. It is the only North American marsupial. There are several in South America, which at one point, was attached to Australia and floating free in the Pacific ocean until they separated and S. America joined N. America via Central America. When this happened, S. American mammals (mostly marsupials) headed north and N. American mammals (mostly placentals) headed south. In the end, the placental mammals faired much better in both regions so there are fewer marsupial in the Americas. (If you believe in that sort of thing, what with plate tectonics, evolution, etc....)
Christian
I met only one person who did not believe in plate tectonics. I don't think it is a question of "believing". It is simply the best theory available, as with Bering Straight migration as the main source of migrants. As an inside, there was an Argentinian paleontologist who said he could prove that man appeared first in Argentina but could never show his bony proofs. In that case it was a question of believing...
Andre --
