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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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Presentation Transcript
girdles
Girdles
  • Pelvic
  • Pectoral
  • Limbs
  • Concentrate on Tetrapod Limbs
tetrapod limb
Tetrapod Limb
  • Typical 4 limbs
  • Primarily a modification of the Rhipidistian fin

Modified elements

Lost 4

Lost 2

wings

paddles

slide5

Fitness

  • Recall: Vp = Vg + Ve + Vgxe
  • V = variation
  • p = phenotypic
  • g = genotypic
  • e = environmental

Resource use

(ecology)

Behavior

& Performance

Morphology

(anatomy)

three main components
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