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Chordate Classes <ul><li>Agnatha  – jawless fish (lampreys and hagfish) </li></ul><ul><ul><li>Eel-like, no scales </li></u...
Chordate Class: Osteichthyes <ul><li>“ Bony Fish” – skeleton made of true bone </li></ul><ul><li>Swim bladder </li></ul><u...
Vertebrate Class: Amphibia <ul><li>Begin life in water using gills, and adults have lungs </li></ul><ul><li>Moist skin – g...
Vertebrate Class: Reptila <ul><li>Mostly terrestrial </li></ul><ul><li>Dry scaly skin </li></ul><ul><li>1 st  amniotic egg...
Vertebrate Class: Aves <ul><li>Feathered bodies with scales on their feet </li></ul><ul><li>Endothermic </li></ul><ul><li>...
Vertebrate Class: Mammalia <ul><li>Hair covering the body </li></ul><ul><li>Fat under the skin </li></ul><ul><li>Mammary g...
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Phylogeny and chordates for moodle

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Transcript of "Phylogeny and chordates for moodle"

  1. 2. Chordate Classes <ul><li>Agnatha – jawless fish (lampreys and hagfish) </li></ul><ul><ul><li>Eel-like, no scales </li></ul></ul><ul><ul><li>Sucker-like mouth </li></ul></ul><ul><ul><li>Some parasitic </li></ul></ul><ul><ul><li>Cartilaginous skeleton </li></ul></ul><ul><li>Chondricthyes – cartilaginous fish </li></ul><ul><ul><li>True jaw </li></ul></ul><ul><ul><li>Gill slits are not covered </li></ul></ul><ul><ul><li>Spiky scales </li></ul></ul>Sharks Rays
  2. 3. Chordate Class: Osteichthyes <ul><li>“ Bony Fish” – skeleton made of true bone </li></ul><ul><li>Swim bladder </li></ul><ul><li>Gill cover (operculum) </li></ul>Seahorse Examples: Perch, bass, eels tuna, salmon Paired fins
  3. 4. Vertebrate Class: Amphibia <ul><li>Begin life in water using gills, and adults have lungs </li></ul><ul><li>Moist skin – gas exchange </li></ul><ul><li>External fertilization needs water </li></ul><ul><li>Frogs, salamanders </li></ul>Adult Frog Young Frog Fertilized Eggs Tadpoles
  4. 5. Vertebrate Class: Reptila <ul><li>Mostly terrestrial </li></ul><ul><li>Dry scaly skin </li></ul><ul><li>1 st amniotic egg </li></ul>Snakes Lizards Alligators Turtles
  5. 6. Vertebrate Class: Aves <ul><li>Feathered bodies with scales on their feet </li></ul><ul><li>Endothermic </li></ul><ul><li>Gas exchange using lungs </li></ul><ul><li>Wings (MOST fly) </li></ul>
  6. 7. Vertebrate Class: Mammalia <ul><li>Hair covering the body </li></ul><ul><li>Fat under the skin </li></ul><ul><li>Mammary glands </li></ul><ul><li>Endothermic </li></ul>
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