The Proterozoic Eon, spanning from 2,500 million to 539 million years ago, marked a transformative chapter in Earth's history. Often overshadowed by the more data-rich Phanerozoic Eon, this period ...

The Precambrian was the first super eon of Earth’s history. This division of time — about seven-eighths of Earth's history — lasted from the first formation of the planet (about 4.6 billion ...

Advanced tools and expanded fossil datasets have painted a clearer picture of the eukaryotic diversity of the Proterozoic eon, which has been hard to quantify. The findings show that Earth's ...

With this new study, the chart of life now includes life forms from the Proterozoic Eon, 2,500 million to 539 million years ago. Proterozoic life was generally smaller and squishier ...

Approximately between 1.8 and 0.8 billion years ago, in the mid-Proterozoic Eon, ... Researchers have hypothesized that the mid-Proterozoic ocean may have lacked such large producers.

More than an eon ago, the sun shone dimmer than it does today, but the Earth stayed warm due to a strong greenhouse gas effect, geoscience theory holds. Astronomer Carl Sagan coined this "the ...

Mountain-Building Stalled for Nearly an Eon During Earth’s Most Boring Period. New research suggests that virtually no new mountains were created during the Proterozoic era, halting the evolution of ...

Purple sulfur bacteria fix N2 via molybdenum-nitrogenase in a low molybdenum Proterozoic ocean analogue. Nature Communications , 2021; 12 (1) DOI: 10.1038/s41467-021-25000-z Cite This Page : ...

Life Story - the Proterozoic era. Discovery. A look at life in the pre-Cambrian era, more than half a billion years ago.