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Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES. The Chordates… . A division comprising vertebrates. Coelomate, bilateral animals. Most are vertebrates; only a few are invertebrates . Distinct Features of Chordates. A notochord Tubular, dorsal nerve cord

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Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

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  1. Lecture 6ANIMAL EVOLUTION: THE VERTEBRATES

  2. The Chordates… • A division comprising vertebrates. • Coelomate, bilateral animals. • Most are vertebrates; only a few are invertebrates.

  3. Distinct Features of Chordates • A notochord • Tubular, dorsal nerve cord • Gill slits punctuates the wall of pharynx • Post-anal tail

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