What place do chordates occupy in evolution?

Chordates have the highest position of the environment of all types of animals. All due to the fact that they have a well-developed nervous system. Chorda is a characteristic part of the body of chordates. But it disappears from the body of chordates even at the stage of embryonic development. Man also belongs to the Chordate. Until the beginning of the second trimester of development, the notochord disappears from the body. It transforms into intervertebral discs. The cells that formed the notochord, over time, completely disappear from the body. It takes a person up to seven years.