Discover trace particles in prehistoric rocks They revealed A rich ecosystem of organisms that evolved and thrived in Earth’s oceans billions of years ago. The biomarkers were found in 1.64-billion-year-old rocks and belonged to previously unknown organisms that dominated the low-oxygen Earth at the time, before plants, animals and fungi evolved.
They are so radically different from anything alive today that scientists have given them a name Buta protosterol. They are the planet’s first predators, feeding on microbes from the oceans. In fact, they appear to be the ancestors of all eukaryotic organisms, that is, plants, animals, and fungi.
The molecular remains of plant protosterols have been discovered in rocks that are 1.6 billion years old and appear to be the oldest remains of our origins. They lived before the last eukaryotic common ancestor (1.2 billion years ago). These prehistoric creatures were widespread in marine ecosystems around the world, and may have shaped the ecosystems that followed Earth’s history.
It is very difficult for scientists to discover such ancient organisms they did it Rock analysis of the Barney Creek Formation in Australia. They looked for steroids, a biomarker for early eukaryotic organisms, since almost all of these organisms can synthesize steroids such as cholesterol.
Researchers believe that protosterol organisms were larger and more complex than bacteria and even fed on them because they were at the top of the food chain.
We think they were the first predators on Earth, hunting and devouring bacteria.
Traces of these organisms disappeared 800 million years ago, and after this point, algae and fungi appeared. The first animals began to appear 700-600 million years ago. This change is called the Tonian Transformation and it is one of the largest changes that have occurred in the Earth’s environment, allowing the development of modern eukaryotic organisms.
Research published in nature.
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