What are the names of the five groups of chordates?

The five groups of chordates are: 1) Cephalochordates (lancelets), 2) Urochordates (tunicates), 3) Jawless fish (Agnatha), 4) Cartilaginous fish (Chondrichthyes), and 5) Bony fish (Osteichthyes) and tetrapods (amphibians, reptiles, birds, and mammals). These groups encompass a diverse range of organisms, from simple marine animals to complex terrestrial species.