Question

Pectoral girdle attached Pelvic girdle attached Chondrichthan girdle halves are fused producing thesingle element, the puboshiac bar, that is (Squalus) scapulocoracoid, that is joined to the embedded in the musculature of the trunk other half of the pectoral girdle by the coracoid bar. ray finned fishes The scapulocoracoid attaches the fin to the girdle. Lobe finned fishes Tetrapods

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Answer 1

Pelvic girdle in ray finned fish is embedded in the body wall and is articulated to a number of elongated cartilaginous elements, which support the pelvic fin rays.

Pelvic girdle in lobe-finned fish articulates with the femur at its distal tip through which femur articulates with the tibia and fibula. Pectoral girdle in lobe finned fish emerges from girdle of membranous bones derived from the skin. which encircles the head starting from behind the gills and fuse in the midline on the ventral surface of the body through the medium of the interclavicle.

Pelvic girdle in tetrapods is large, broad puboischiadic plate that is joined to the iliac process of a hypertrophied sacral rib in which fusion of these creates an acetabulum. In tetrapods, pelvis is not fused to the pectoral girdle anteriorly in which the ilium originates from the pubis and extends dorsally to fuse with a sacral rib.