Earth was not always blue. It was once purple and even pink, as per some scientists. Research has shown that millions of ...

The Archean Eon (4–2.5 million years ago) is the second of Earth’s four major geologic eons, a time when the planet was mostly covered by oceans extending far deeper than those found today.

the geological eon that spans from 4.5 to 2 billion years ago; They should be defined as Archaean in age; They must not have been removed from their initial site of deposition; They must have been ...

This provocative manuscript from presents valuable comparisons of the morphologies of Archaean bacterial microfossils to those of microbes transformed under environmental conditions that mimic those ...

Microfossils from the Paleoarchean Eon represent the oldest evidence of life ... so it seems unlikely that prokaryotes were not around at the same time. Considering other fossil evidence preserved in ...

Archen draws its name from the Archaean eon, an ancient geological period dating ... derived from the Cover Fossil, are based on massive extinct sea turtles, Protostega and Archelon.

While this understanding helps illustrate some of the strange morphologies of these fossils, it isn’t definitive ... that timeline well into the Archean Eon. Most assume that the first cells ...

Scientists in Brazil identified marine worms that made at least some trace fossil burrows called Bifungites. By Priyanka Runwal If you know where to look, you can find dumbbell-shaped fossils in ...

They can be found throughout the Archean, becoming increasingly common late in the eon. However, a limited number of bacterial fossils are known from this period. While life was most likely present ...

Windows version with graphical interface (GUI). Easy to use. Console versions for use on the command prompt for Linux and Windows. The console versions can be used either with command line arguments ...

Artist’s rendering of the Archean Eon. Note the shallow sea full of stromatolites ... they formed structures called stromatolites, which are common fossils from the Archean period.

Archean Eon: Simple, single-celled organisms, bacteria, and archaea first appeared. Cyanobacteria produced oxygen through photosynthesis. The Archean atmosphere lacked free oxygen, but over time, ...