The characteristics of Cephalochordata are that they are segmented marine animals that possess elongated bodies with a notochord that extends the length of the body extending from head to tail and it persists throughout their life.
The characteristics of Cephalochordata are that they are segmented marine animals and it persists throughout their life. These segmented marine animals possess elongated bodies with a notochord. This notochord extends the length of the body. This body is extending from head to tail.