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A team of international scientists led by researchers from Australia found the oldest color in the Earth's geological registry. The old pigment found in the rocks under the Sahara Desert could be ten times older than the T-rex. ( The Australian National University )
An international team of scientists discovered the oldest color in the geological record of rocks under the Sahara desert: the bright pink pigment aged 1.1 Billion Years
Nur Gueneli, of the Australian National University, said that the old pigment was extracted from marine black shale from the Taoudeni Basin in Mauritania, Africa. ;Where is. It is believed that the bright pink color is more than half a billion years older than other prehistoric pigments.
The Ancient Bright Pink
The fossils from which comes the archaic bright pink seem to have a variety of colors. The fossils were originally green and became blood red to dark purple in their concentrated form. When the fossils were diluted, their final shape revealed the bright pink pigment in the form of oil.
After analysis, Gueneli said that the old pigment came from molecular chlorophyll fossils that were treated by ancient photosynthetic organisms that once ruled the oceans. To set the context, the molecular fossils found by the team were 10 times older than a Tyrannosaurus rex.
The discovery of the ancient bright pink pigment could give a new insight into why it took 4 billion years before the first animal life evolves. On Earth
Cyanobacteria
For the study, published in the Proceedings of the National Academy of Sciences on July 9, Gueneli and his team sprayed aged rocks a billion years ago they found under the Sahara desert. The team then extracted and analyzed the powdered form of the rocks.
Their analysis revealed that the rocks contained molecules of ancient organisms known as cyanobacteria. Gueneli explained that these microorganisms once dominated the base of the food chain in the oceans a billion years ago. This meant that all the organisms at the time were feeding on cyanobacteria.
However, the size of the cyanobacteria was so small that it was not sufficient for larger organisms such as animals.
Indeed, animal life appeared on Earth
The Earth, Cyanobacteria and Algae
The Earth is about 4 billion years old. More sophisticated life forms, however, began to appear 600 million years ago.
It was previously thought that lack of oxygen could prevent larger creatures from flourishing soon after life began on Earth. The discovery of the ancient bright pink, however, can change this narrative.
The emergence of larger life forms may have been hampered by the lack of larger food particles, according to Jochen Brocks, the principal principal investigator of the study. In comparison, microscopic algae are a thousand times larger than cyanobacteria. In fact, the ancient oceans that were once dominated by cyanobacteria began to disappear when algae became predominant.
"The cyanobacterial oceans began to disappear about 650 million years ago, when algae began to spread rapidly, to explain the evolution of complex ecosystems, where large animals, including humans, could flourish on Earth, "says Brocks
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