Gen 7:2-3 2 Take with you seven pairs of every kind of clean animal, a male and its mate, and one pair of every kind of unclean animal, a male and its mate, 3 and also seven pairs of every kind of bird, male and female, to keep their various kinds alive throughout the earth.
The key to this verse is the term "kind". The "sample" animals that were taken on the ark contained all the "information" necessary to produce all the variety you see today.
Now, if you're thinking that there should be giant armadillos and mammoths if this were true, why couldn't they become extinct AFTER the flood? To leave that out is to put forth a logically flawed argument.
eek - pre-coffee... “there’s”