The embryo of what animals at different stages of development is similar to fish, amphibians, reptiles?

At the stage of embryonic development, most animals do not look like a born organism. The human embryo also shares many similarities with its ancient ancestors. The embryo looks more like a fish at first, and then like a reptile. The embryo has a tail, gills, notochord. It is very difficult, without some experience, to recognize where the human embryo is and where another mammal is. This proves the evolution of living things and the fact that we, like all animals, descended from one common ancestor who appeared on our planet billions of years ago.