Prochordates are the category of animals which contains characterstic features of both invertebrates and vertebrates. These type of organisms are generally found in marine water.
Characterstic features of prochordates are they are bilateral , coelomated and triploblastic organisms and exhibit organ level system of organismation. Also , Hemichordata , Cephalochordata falls under the classification of Prochordata. Example of prochodate organism is Herdmania.