Urochordata, Cephalochordata, Vertebra

tunicates and salps, usually grip to something in larvae stage

lancelets and amphixous, typically buried in sand, very poorly developed brain and organs

vertebrae (cartilage or bone) and a cranium (enclosing the brain)

jawless fish, hagfish and lamprey

cartilaginous fish, have jaws and teeth

bony fish, including air bladder in many

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Chordata Evolution

phylums and sub phylums and some characteristics

Question	Answer
Chordata subphylums	Urochordata, Cephalochordata, Vertebra
Urochordata	tunicates and salps, usually grip to something in larvae stage
Cephalochordata	lancelets and amphixous, typically buried in sand, very poorly developed brain and organs
Vertabra	vertebrae (cartilage or bone) and a cranium (enclosing the brain)
Agnatha	jawless fish, hagfish and lamprey
Condrichthyes	cartilaginous fish, have jaws and teeth
Osteichthyes	bony fish, including air bladder in many