I personally find this the hardest LR question in PT 14; it is (1) bizarre on the level of content, (2) very long and overloads test takers with information, and (3) at the very end of the fourth section, thus hitting you at a point of the test where you ...
I understand that the fossils were discovered essentially backwards, in that as they discovered more fossils over the centuries they found more and more older fossils.