2020-07-13

The creature was discovered about 400 million years ago, and if scientists get it, it is the oldest terrestrial animal

By yqqlm yqqlm

The creature was discovered about 400 million years ago, and if scientists get it, it is the oldest terrestrial animal

In Scotland, England, paleontologists have found a way It seems to be a”millipede” paleontological fossil, but after research, it was found that it is not a”millipede” and belongs to a The ancient population that has been extinct, in terms of time, is about 425 million years ago. It is the oldest known land animal. This research report is also published in the latest version of”Historical Biology”.

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What are the characteristics of this ancient animal?

Because its time is too long, its body has not been completely preserved. In fossils, scientists have not found its feet, and it is very likely to be lost in the process of geological changes Too. However, from the information currently available, this animal belongs to arthropod, it looks like a worm, and its length is about 2.5 About a centimeter, scientists named it”Kampecaris obanensis”.

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Scientists say that”Kampecaris obanensis” is very likely to be one of the oldest insects on the planet. At the same time, it inhabits a wet area on the shore. The food is mainly decomposed by plants on land. food. In addition, from the time of birth, it is at least 300 million years earlier than the millipede.

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What other ancient terrestrial animals are there?

According to a report from the Beijing Youth Daily in January this year, scientists have discovered two prehistoric scorpion fossils 437 million years ago, but they are the same as this one.”Kampecaris obanensis” is different because”Kampecaris obanensis” lives entirely on land, and these two prehistoric scorpions are amphibians. Although they already have certain characteristics of land animals, they still have some land animals for a while. Need to return to the ocean.

getInterUrl?uicrIvZQ=ec2cb4d518914049d5091fcbd11213ee - The creature was discovered about 400 million years ago, and if scientists get it, it is the oldest terrestrial animal

So, what exactly made the animals that originally lived in the ocean begin to evolve towards the landing animals? Judging from the current fossil research, scientists believe that all of this may be related to the geological changes of the Siurian, as the Paleozoic In the last period, creatures also ushered in a great change in the Silurian.

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What happened to the Silurian?

The Silurian began at 440 million years ago and ended at 410 million years ago. The”Kampecaris obanensis” and scorpion fossils we mentioned above also came from the Silurian. It can be said that the Silurian is a period of ups and downs. After the explosion of Cambrian life, 90%of the various creatures on the earth appeared one after another, and then evolved from generation to generation in the tens of millions of times before the beginning of the Silurian. Many of them became completely different after the Silurian.

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Scientists said that during the Silurian period, the area of ​​seawater on the earth began to shrink gradually, and the area of ​​land also expanded accordingly. Especially in the late Silurian period, the ancient Atlantic Ocean was closed, and the paleogeographic appearance of the earth It was also at this time that the prototype of today began to appear. With the receding of the sea water, some marine organisms originally living in coastal areas had to evolve towards the creatures of the landing site in order to survive.

getInterUrl?uicrIvZQ=c2d13984ec7dcb65f51229c12bc86536 - The creature was discovered about 400 million years ago, and if scientists get it, it is the oldest terrestrial animal

Taking the newly discovered”Kampecaris obanensis” resembling”millipede” this time, its ancestors were the same as ancient scorpions, and they also originated from the ocean. It is very likely that it was the first to climb on land Insects. Because its evolution has been very close to modern worms, scientists guessed that its time to land will begin from the Cambrian period. The next step, scientists will continue to explore and study, hoping to Confirm this conjecture.

Reference News

“Xinhua News Agency” article”The fossil millipede unearthed in the UK may be the earliest terrestrial animal, lived 425 million years ago”