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Australian researchers discovered the world's oldest biological color of the Sahara Desert in a discovery they said Tuesday explaining why complex life forms have recently appeared on Earth
. is more than 1.1 billion years old, about 500 million years earlier than the Rex Tyrannosaurus dinosaur species, according to Jochen Brocks, senior researcher at the Australian National University
. 19659002] The Earth itself is about 4.5 billion years old and the researchers said that the latest discovery revealed why more sophisticated animal and plant life has only existed 600 million years ago. years ago.
the evolution of complicated life forms, but the discovery of cyanobacteria at such an early date suggests that "algae, although still microscopic, are a thousand times larger than cyanobacteria and constitute a much richer food source, "Mr. Brocks told AFP.
"The cyanobacteria oceans began to disappear about 650 million years ago, when algae began to spread rapidly to provide the energy needed to evolve complex ecosystems. , where large animals, including humans, could thrive on Earth. "
Samples accidentally when an oil company that was drilling in the Taoudeni basin in West Africa sent them rocks for analysis
Pigments are fossilized relics of chlorophyll, a chemical that allows plants and certain microscopic forms to transform light into energy.
The researchers said that the pink pigment that they discovered would originally appeared blue-green to the human eye.
The results were published Tuesday in the journal Proceedings of the National Academy of Sciences.
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