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10 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
Dervied Characters of Chordata
1) Notochord (Skeletal Support)
2) Dorsal Hollow Nerve Cord
3) Pharyngeal Slits/ Clefts
4) Muscular Post-Anal Tail
Tunicates
-Sea Squirts
-In thru mouth, food filtered, water shot out thru exit
Lancelets
Marine suspension feeder
Craniates
-Chordates with a head
-Neural crest (Collection of cells that evolve into variety of structures including teeth, neurons, and eyes)
Progression of Chordates
1) Notochord
2) Brain
3) Head
4) Vertebral Column (backbone, spine)
5) Jaws
6) Lungs
7) Lobed fins
8) Legs
9) Amniotic egg
10) Milk
Hagfishes
-Jawless and no vertebrae
Lampreys
-Jawless
Gnathostomes
-Jaws (from skeletal support on pharyngeal slits)
-Enhanced Senses
-Stronger Endoskeleton
-Paired Appendages
Sharks
Ray-finned fish
-Swim Bladder
-Bony gill covers
-Manueverable fins with long rays
Lobe finned fish
Tetrapod limb skeleton