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Appendicular Skeleton

Appendicular Skeleton. Girdles. Pelvic Pectoral Limbs Concentrate on Tetrapod Limbs. Fig. 9.4. Tetrapod Limb. Typical 4 limbs Primarily a modification of the Rhipidistian fin. Modified elements. Lost 4. Lost 2. wings. paddles. Fitness. Recall: V p = V g + V e + V gxe

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Appendicular Skeleton

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  1. Appendicular Skeleton

  2. Girdles • Pelvic • Pectoral • Limbs • Concentrate on Tetrapod Limbs

  3. Fig. 9.4

  4. Tetrapod Limb • Typical 4 limbs • Primarily a modification of the Rhipidistian fin Modified elements Lost 4 Lost 2 wings paddles

  5. Fitness • Recall: Vp = Vg + Ve + Vgxe • V = variation • p = phenotypic • g = genotypic • e = environmental Resource use (ecology) Behavior & Performance Morphology (anatomy)

  6. Three main components • With respect to the pectoral and pelvic girdles: • Serially homologous – • Propodium (= stylopodium) – upper arm, upper leg • Epipodium (= zeugopodium) – forearm, shin • Autopodium – manus or pes (digits, and wrist and palm, or ankle and sole

  7. Drawings of fore and hind limbs

  8. Fig. 9.12

  9. Focus 9.2

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