Chordata

• CHORDATA


  Have a Notochord
• Notochord


  • Flexible rod-like structure
  • Provide support and serve as a foundation for the development of spinal column in vertebrates
  • Notochord is replaced by the backbone at mature stage
• CHORDATA


  • Have tail that extends past the anus
  • Gill slits (pharyngeal slits)
• Gill slits (pharyngeal slits)


  • Openings in the throat area of some animals, like fish and some primitive sea creatures
  • Help with breathing and eating in underwater animals
• Endotherm and Ectotherm

  • Endotherm – warm blooded
  • Ectotherm – cold blooded
• Reproduction

  • Viviparous- baby animals are born alive
  • Oviparous- eggs are placed outside the mother's body
  • Ovoviviparous- eggs develop inside the mother's body
• UROCHORDATA


  • Also known as Tunicate because the body of an adult is enclosed within a tunic made up of cellulose-like substance known as tunicin
  • Notochord can be only seen in the larval stage and disappears in adults
• CEPHALOCHORDATA


  • Motile adult and larval stage
  • Tail and notochord is present throughout life
  • Numerous pharyngeal gill
• CEPHALOCHORDATA


  • lancelet
• Agnatha


  Jawless fishes
• Chondrichthyes


  Cartilaginous fishes
• Osteichthyes


  Bony fishes
• Amphibia


  • 3 chambered heart
• Amphibia


  • Frogs, toads, salamander
• Reptilia


  • 3 chambered heart
• Reptilia


  • Snake, lizard, turtle, alligator
• Aves


  • 4 chambered heart
• Aves

  • Hawk, penguin, eagle, owl
• Mammalia


  • Human, horse, cats, koala