2800 – 2700 million years ago

Year nineteen
Did evolution take place faster than we think?

Did evolution take place faster than we think?

Although there are no fossils known, the earliest evidence of organisms more advanced than bacteria has been reported in the Jeerinah rocks of Australia.

Some scientists say that these rocks contain chemical traces (called lipids) of cyanobacteria and more advanced organisms called eukaryotes.

As these rocks are 2700 million years old, it would mean that evolutionary progress had taken place nearly a billion years earlier than usually supposed.

What are these chemicals telling us? Have the palaeontologists got it wrong? This is a scientific puzzle waiting to be solved.

We will find out more about eukaryotes further along the timeline.


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