Question

phylum chordata is divided into_groups​

Answer 1

Answer:

Chordates are divided into three subphyla: Vertebrata (fish, amphibians, reptiles, birds, and mammals); Tunicata or Urochordata (sea squirts, salps); and Cephalochordata (which includes lancelets). ... The Craniata and Tunicata compose the clade Olfactores.

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Answer 2

Answer:

1. agnatha. jawless fish: lamprey and hagfish.
2. chondrichthyes. cartilage fish: sharks, skates, rays.
3. osteichthyes. bony fish: yellow perch.
4. amphibia. salamanders, toads, frogs.
5. reptilia. turtles, crocodiles/alligators, lizards, snakes.
6. aves. birds.
7. mammalia. mammals.