Could not resist commenting here..just late reading the post.
That's an easy one. Since there were only 2 of each species of these little pouch buggers, God made them all head toward Australia. Two each of every species in Australia (and no where else)stayed together and walked 8,000 miles without being eaten by predators who were then vegetarians...even though the predators had no vegatation to eat after the flood.
They traveled 24/7 let's say at an improbable 2 miles a day 24 hours a day (no rest for the Marsupies). It would have taken 4,000 days to get there. That's about 11 years. How long do all these marsupials live? If breeding did take place on the way, in 4,000 days, how many could there have been remaining in between? And then where is the evidence they all were passing though for those 11 years?
Here's the answer:
1) God told them to all head towards Australia or same general area.
2) God prevented them from being eaten or just plain being dead from any causes for those 11 years.
3) God told those born enroute also to go to Australia and not die on the way and leave remains to be found today.
SOOOO, God wanted them pouchies in one place on the planet and no where else for some reason. He eliminated any record of the Pouchies crossing through all the areas through which they had to pass. God made them live much longer than the existing species so they would not die of old age on the way. And they lived long enough to reproduce FINALLY where we find them today.
Yea, that's it!