Wolfgang, I'm sure those animals went extinct a long time before the North American tribes arrived at their philosophy of "Seven Generations". The fact that the pre-Columbian people of North America did eventually arrive at a point when they understood the need to take into account future generations in their deliberations means they, at least, were capable of learning from their mistakes.

It was indeed the Europeans (and now the USAns) with their selfish decision making habits that have brought North America to this point of being on the verge of making the whole human race extinct. Hopefully we will be able to learn to take future generations into account before that happens.