Monday, 20 June 2022 – 17:52 WIB
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VIVA – Species eldest from World. Much of Earth’s history has been solved through research into what is known as fossil. Scientists have solved the mystery about fossils, all species have their fossil origins dating back millions of years.
Here are some of the oldest species in the world that evolved not far from their original form, as reported by the oldest.org, as follows:
1. Cyanobacteria
The marine bacterium Synechococcus cyanobacteria.
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Cyanobacteria are the oldest species in the world. Cyanobacteria, a type of bacteria, are believed to be the oldest known bacteria on earth. Stromatolites are fossils of a type of layered rock consisting of layers of micro-organisms from more than 3.5 billion years ago and contain evidence of cyanobacteria activity. But this evidence was debated in 2010. The evidence for Cyanobacteria which is the oldest and indisputable bacteria or fossil is 2.1 billion years old.
2. Sponges
Despite recent research suggesting that the Comb Jellyfish are older, sponges are still widely believed to be the first group to branch off the evolutionary tree from the common ancestor of all animals. Unlike most other animals, sponges do not have a cell wall, while sponges have an asymmetrical body of between 5,000 – 10,000.
The earliest sponge fossil record dates back to about 580 million years ago. The best-preserved sponge fossil and the oldest to be 600 million years old were discovered in 2015.
3. Jellyfish
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Jellyfish are one of the oldest multi-organ animals in the world and have existed in several forms for 500 million years. The oldest known definitive jellyfish fossils date back 500 million years. Research on the jellyfish fossil was released in 2017 and stated that the fossil was 200 million years old.
Recent research in 2011, has revealed that jellyfish are more complex than previously thought. A marine biologist refutes the conventional wisdom that jellyfish do not have a central nervous system. a marine biologist said.
“That the jellyfish nervous system may not be as clear as in animals with brains connected to the spinal cord, but different in its own way.” he said.
4. Nautilus
Nautilus is very easy to recognize from the shell that is shaped like a spiral. The modern nautilus did not evolve very far and was the earliest ancestor. In the fossil record more than 2,500 species of nautiloids have been found, but only six species are extant today.
Nautilus is the oldest cephalopod with an age of 15 to 20 years. Although nautilus isn’t close to full yet. The nautilus is over-harvested and its shells containing mother-of-pearl are removed for use in the aquarium.
5. Horseshoe Crab
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Medical use of horseshoe crab
Photo :
- VIVA.co.id/bp.blogspot.com
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Horseshoe Crab is a living fossil and the most famous. in 2008, researchers found a Horseshoe Crab fossil that was 445 million years old. But unfortunately, Horseshoe Crab faces many threats from human greed and is threatened with extinction.
Blood from Horseshoe Crab which has unique properties that are used to test the safety of vaccines, because blood from Horseshoe Crab is blue, as many say that one of the ingredients for the Covid-19 vaccine is made from Horseshoe Crab blood.
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