The Proterozoic Eon, spanning from 2,500 million to 539 ... this research illuminates the diversity and evolutionary dynamics of eukaryotic life during the Proterozoic. These findings offer ...

The subsequent Archean eon (approximately 3,500 million years ago) is known as the age of bacteria and archaea. The Proterozoic eon was the gathering up of oxygen in Earth's atmosphere ...

These mitochondria are called hydrogenosomes and allow the cell to gain about 4 ... Energy metabolism among eukaryotic anaerobes in light of Proterozoic ocean chemistry. Philosophical Transactions ...