Ancestors of today’s animals possessed amazing features. For example, the ancient snake different from today’s reptiles are the fact that they had legs and they could use them to walk. However, the world is constantly changing and many animals eventually get rid of unnecessary parts of his body. But when they started to do it? Judging by the results of a recent study that for the first time it happened about 518 million years ago in the so-called Cambrian period. This, at least, the remains of the mysterious creature species Facivermis yunnanicus, the body of which was originally covered with limbs. With the time being changed their way of life and unnecessary parts of the body in the course of evolution simply disappeared.
About the unusual creature, which is considered the first who got rid of unnecessary parts of the body, was written in the scientific journal Current Biology. It is believed that 10-inch Facivermis yunnanicus was a body, completely covered with limbs. However, in the course of evolution a large part of his body lost his “legs” and eventually the creature left only five pairs of spiny tentacles. The mysterious creature was discovered more than 30 years ago, but scientists still do not know, an ancestor of the current animal what it is.
Mysterious animal of antiquity
Previously it was thought that it is the ancestor of today’s palpal animals. Today, however, scientists are of the opinion that Facivermis yunnanicus refers to lobopoda, including the famous and indestructible tardigrades. Some may argue that lobopod limbs located along the body, while the mysterious creature of antiquity have limbs only on the upper part of the body. Scientists believe that these limbs were, but disappeared because of the changing lifestyle of the animal.
Most likely, once upon a time Facivermis yunnanicus moved with limbs. But over time it began to be attached to the bottom, causing the lower part of the limbs gradually began to disappear. Only the upper left tentacles, which the creature captured and ate the food. According to study author Richard Howard, this animal could be the first in the history of our planet, who got rid of unnecessary parts of the body.
With all this, scientists do not exclude that the ability to get rid of the useless bodies appeared during the time when the Earth has just arisen multicellular organisms. However, to detect so tiny evolutionary change on the basis of the remains, most likely, not possible. At least, it seems extremely difficult with current technologies. It is not excluded that someday scientists will find this assumption at least circumstantial evidence.