The Skeleton: Part 3. The Appendicular Skeleton
 

SHARK PECTORAL AND PELVIC GIRDLES

The coracoid bar of a shark spans from the base of one pectoral fin to the other on the vental side of the shark just behind the gills.

 

The paired scapular cartilages, and their extensions, the suprascapular cartilages, extend dorsally from their base at the lateral ends of the coracoid bar, near the fin, on either side of the body in the muscular wall. The glenoid surface is the surface of articulation between the fin base and the coracoid bar.

 

The puboischiadic bar of the pelvic girdle is suspended between the bases of the pelvic fins. The acetabular surface is the surface of articulation between the fin base and the puboischiadic bar.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STUDY TOPICS IN SEQUENCE

Theories of pectoral girdle origin

Shark pectoral and pelvic girdles

Dermal bone of the pectoral girdle

Pectoral girdles of tetrapods

Vetebrate pelvic girdles

Fish and their fin skeletons

The fin foot link

Diversity in the skeletons of appendages

Questions