Appendicular Skeleton

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Appendicular Skeleton
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Presentation transcript:

Appendicular Skeleton Comparative Anatomy Biology 351

Appendicular skeleton Girdles: Pectoral and Pelvic Limbs, Fins, Wings

Sarcopterygii: crossopterygii -Flesh-lobed fins -skeletal structure similar to fish ancestor of tetrapods

Coelocanth

Tiktaalik

Tiktaalik

Limb Development

Pectoral Fin Basal cartilages Rays Radial cartilages Pectoral Girdle

Dorsal Fins Spine Radial cartilages Basal cartilages Rays

Pelvis

Pectoral girdle of Dinosaurs

Shares reptilian and bird characteristics

Wing Structure

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