A paper that I was a co-author was just published in Nature. The study was led by Erik Sperling and statistically analyses geochemical data (specifically the iron content of shales) in order to track the redox evolution of the oceans during the Proterozoic through the Paleozoic. It then places this history into what we know about the evolution of animal life.
Here is a link to the article at Nature:
Here’s a link to write up that Virginia Tech did on the paper