Archeozoic Era, a division of geologic time used by some geologists. The Archeozoic Era corresponds to early Pre-cambrian Time.
Crack open any science textbook and the authors will tell you that such things don't happen. So how did a couple of paleontologists and an acid bath turn that widespread belief on its head?
This fascinating subfield of anthropology is filled with bones, and the people who practice it are sort of like real-life Indiana Joneses. Curious yet?