give a graphic representation of classification of phylum chordata
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It consists of a big group of heterogeneous members and all are distinctive from each other.
It is divided into two groups named as Acrania and craniata.
Group A consists of Subphylum, hemichordata, urochordata, cephalchordata.
Group B consist of Agnarha and vertebrate.
They are bilaterally symmetrical and different in size.
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