How to explain the similarities in the early stages of embryonic development in animals?

The embryos of various animals in the early stages of development are very similar. Also, the stages of development of embryos in animals are very similar. All due to the fact that different groups of animals descended from common ancestors. Therefore, the stages of development and the embryos themselves are very similar. The human embryo at first bears little resemblance to a person, but rather to a shrimp. We have a tail, gills, chord. They are soon lost in the process of intrauterine development. But this fact confirms the evolution of living organisms and proves our origin from animals.