Phylum

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Phylum Chordata
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• 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)

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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)
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Phylum Chordata Subphylum Cephalochordata Fig.
12.3, dorsal view Note fin ray (A), myomeres
(B), dorsal hollow nerve cord (nerve
tube) (C), notochord (D)
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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)
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Phylum Chordata Subphylum Cephalochordata
Fig.12.3, cs- posterior region Note myomeres
(A), ovaries (B), atrium (C), metapleural folds
(D),