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Phylum Chordata

Phylum Chordata. A. Phylum Chordata: [Fig 12.1] Subphylum Urochordata tunicate tadpole larvae Note 4 chordate characteristics: 1. Dorsal hollow nerve cord 2. Notochord 3. Gill Slits 4. Post-anal Tail (A). A. A. B. C. D. E. A. B. C. D. E.

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Phylum Chordata

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  1. Phylum Chordata

  2. A

  3. Phylum Chordata: [Fig 12.1] • Subphylum Urochordata • tunicate tadpole larvae • Note 4 chordate • characteristics: • 1. Dorsal hollow nerve cord • 2. Notochord • 3. Gill Slits • 4. Post-anal Tail (A) A

  4. A B C D E

  5. A B C D E Phylum Chordata: Subphylum Cephalochordata [Fig. 12.2, dorsal view] Note: dorsal fin rays (A), myomeres (B), dorsal hollow nerve cord (=nerve tube (C), notochord (D), gill slits & bars (E)

  6. A B C B D

  7. A B C B D Phylum Chordata: Subphylum Cephalochordata [Fig. 12.3, dorsal view] Note: fin ray (A), myomeres (B), dorsal hollow nerve cord (nerve tube) (C), notochord (D)

  8. A B B A C C B D G B C B C E F F

  9. A B B A C C B D G B C B C E F F Phylum Chordata: Subphylum Cephalochordata [Fig.12.3 cs- anterior region] Note: ovaries(A) gill bars(B), gill slits(C), Pharynx (D), endostyle (E), metapleural folds (F), atrium (G)

  10. A B B C D D

  11. A B B C D D Phylum Chordata: Subphylum Cephalochordata [Fig.12.3, cs- posterior region] Note: myomeres (A), ovaries (B), atrium (C), metapleural folds (D),

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