1. The three subphyla are as follows: UroChordata (tunicates)

2. The phylum Chordata is separated into three subgroups (or subphyla)

3. Taxonomically, the phylum includes the subphyla Vertebrata, includin mammals, fish, amphibians, reptiles, birds; Tunicata, includin salps an sea squirts; an CephaloChordata

4. The classification of Arthropoda of Ruppert and Barnes (1994) as given partly in this textbook (4th ed.), shows that the phylum is divided into four subphyla

5. Chordate, any member of the phylum Chordata, which includes the vertebrates (subphylum Vertebrata), the most highly evolved animals, as well as two other subphyla—the tunicates (subphylum Tunicata) and cephaloChordates (subphylum Cephalochordata)

6. Chordate, any member of the phylum Chordata, which includes the vertebrates (subphylum Vertebrata), the most highly evolved animals, as well as two other subphyla—the tunicates (subphylum Tunicata) and cephalochordates (subphylum CephaloChordata)