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 ...

With this new study, the chart of life now includes life forms from the Proterozoic Eon, 2,500 million to 539 ... marine eukaryotes -- organisms whose cells contain a nucleus.

The Precambrian is the name given for the first super eon of Earth’s history ... the chloroplasts and mitochondria of the first eukaryotic cells. Microfossils of these early cells are called ...

That dating puts this water in the Proterozoic ... of simpler prokaryotic cells. The first step was the acquisition of a nucleus, the defining feature of eukaryotic cells. A bacterial cell ...

This discovery has made it possible to unambiguously identify one of the first phototrophic eukaryotic organisms ... emergence during the Proterozoic (third Precambrian eon from -2.5 billion ...

Prokaryotes are single-cell organisms and consist ... was based on the scarcity of diagnostic eukaryotic fossils in marine sediments from the mid-Proterozoic era. Could the Earth's rotation ...

With this new study, the chart of life now includes life forms from the Proterozoic Eon, 2,500 million to 539 ... marine eukaryotes — organisms whose cells contain a nucleus.