Classification of Chordates (Kingdom Animalia)

Classification of chordates
Chordates are classified into two groups
1) Protochordates or Acraniata
2) Euchordates or Craniata
Protochordates are furthe classified into two sub phylum i.e. Urochordates ( Tunicates) and Cephalochordates (Lancelets).

Eurochordates are further divided into sub phylum Vertebrata which is further divided into two divisions
1) Agnatha
2) Gnathostomata
Agnatha contains the class Cyclostomata.
Gnathostomata is futher divided into two super classes.
1) Pices
2) Tetrapoda
Pices have two classes i.e. Class Chondrichthyes and Class Osteichthyes.
While Tetrapoda have four classes i.e. Class Amphibian, Class Mammalia, Class Aves, Class Reptilian.