OMOSTERNUM 



Fig. 323. Pectoral and pelvic girdles. (A) Diagrammatic pectoral girdle of Tetrapoda 

 (modified from Kingsley, '25). (B) Pectoral girdle of Squalus acanthius. (C) Pectoral 

 girdle of the frog, Rana (redrawn from Kingsley, '25, after Parker). Observe that clavicle 

 is a small bony bar superimposed upon procoracoid; suprascapula removed on right side. 

 (D) Pectoral girdle of the bird. Callus. (E) Human pectoral girdle. (F) Diagram- 

 matic representation of pelvic girdle in Tetrapoda (modified from Kingsley, '25). (G) 

 Pelvic girdle in Squalus acanthius. (H) Pelvic girdle in Rana cuteshiana. (I) Pelvic 

 girdle in Callus (chick). (J) Pelvic girdle in human. (K) Pelvic girdle in Didelphys 

 (opossum). (L) Dorsal view of sacrum and pelvic girdle in the armadillo, Tatusia. 



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