One should approach this type of study with realistic expectations. Since not much is known about what actually happened in the past, historical scientists can only attempt to construct an explanation, and then see how well that explanation works. The theory presented in this paper does not work perfectly. One might compare these efforts to a kind of guessing game. The correct answer is not known, but you hope you are getting closer to the correct answer.
Ecology impacts the distribution of fauna.
Major ecological and physiographic regions of South America are delineated on this map. Previous Creationist Studies Creationists have long struggled with the problem of explaining present animal distributions as starting with dispersal from the ark. None of these authors has discussed the fauna of South America specifically. The flood involved worldwide catastrophic destruction. Although Noah brought some seeds with him on the ark, many plants apparently survived the flood outside the ark.