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classifying characteristics of phylum chordata for biology class

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  1. 1. PHYLUM: CHORDATA The invertebrate chordates
  2. 2. CLASSIFYING CHARACTERISTICS <ul><li>Have a dorsal notochord , which supports the “spinal” nerve and </li></ul><ul><li>Have a hollow nerve cord, which typically develops into a spinal cord </li></ul>Formation of nerve cord
  3. 3. MORE CLASSIFYING CHARACTERISTICS <ul><li>Have a pharyngeal pouch , which become gills, jaw bones, inner ears, etc. </li></ul><ul><li>Have a postanal tail . </li></ul>
  4. 4. MORE CLASSIFYING CHARACTERISTICS <ul><li>Have a postanal tail . </li></ul>
  5. 6. Urochordata: TUNICATES
  6. 7. Also called Sea Squirts
  7. 8. Cephalachordata: Lancelets
  8. 9. VERTEBRATES <ul><li>Fish </li></ul><ul><li>Amphibians </li></ul><ul><li>Reptiles </li></ul><ul><li>Aves </li></ul><ul><li>Mammals </li></ul>