What are the signs of similarity between cranials and vertebrates?

The similarities between skullless and vertebrates are that: there is a support, which then evolves into a skeleton, they also have an almost identical plan for the structure of the circulatory and muscular system.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.