Elements of the comparative anatomy Elements of the comparative anatomy of vertebrates elementsofcompar00wied Year: 1886 FIG. 71.—DIAGRAM OF THE GROUND-TYPE OF PECTORAL ARCII MET WITH ix ALL VERTEBRATA, FROM THE AMPHIBIA UP TO MAMMALIA. 8, scapula ; Co, coracoid ; 67, precoracoid (clavicle) ; H, humerus. FIG. 72.—SEMIDIAGRAMMATIC FIGURE OF THE PECTORAL ARCH AND STERNUM OF Urodcla. iSt, sternum ; a, point where the two coracoids overlap ; Cl, precoracoid (clavicle) ; SS, suprascapula, shown extended transversely outwards on the left side ; t, bony scapula ; H, humerus.

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