Archive image from page 36 of Description of new carnivores from. Description of new carnivores from the Miocene of western Nebraska descriptionofnew45pete Year: 1910 Fig. 39. Dorsal and Radial Views of Left Metacarpal V of D. super- bus. Nat. size. Measurements of Metacarpal IV. Mm. Greatest length 60 Greatest antero-posterior diameter of head 15 Greatest transverse diameter of head 12 Metacarpal V. —The fifth metacarpal is as heavy as the fourth, but it is shorter, as has been stated before. The proximal end is much expanded, especially in the ulnar direction, which is due to the heavy and
Archive image from page 36 of Description of new carnivores from. Description of new carnivores from the Miocene of western Nebraska descriptionofnew45pete Year: 1910 Fig. 39. Dorsal and Radial Views of Left Metacarpal V of D. super- bus. Nat. size. Measurements of Metacarpal IV. Mm. Greatest length 60 Greatest antero-posterior diameter of head 15 Greatest transverse diameter of head 12 Metacarpal V. —The fifth metacarpal is as heavy as the fourth, but it is shorter, as has been stated before. The proximal end is much expanded, especially in the ulnar direction, which is due to the heavy and rough tuberosity for the attachment of ligaments and muscles. The articulation for the unciform is regularly convex from before backward, the transverse diameter of the palmar area being greater than that near the dorsal face. In Daphoemis this articulation is pro- portionally broader, but the ulnar face of the head is not as prominently, developed as in the genus under consideration (see Fig. 39). The dorsal face of the shaft faces to the ulnar side of the manus as well as forward, and the shaft is arched forward in approximately the same proportion as that of Mc. I. The distal end is expanded and points slightly in the ra- dial direction when the bone is in position in the manus. The articulation for the proximal phalanx is similar to those on the metacarpals described above, except that the facet on the ulnar side of the pal- mar carina is placed higher up and is of larger size than the one on the radial side. Measurements of Metacarpal V. Mm. Greatest length 47 Greatest antero-posterior diameter of head 13 Greatest transverse diameter of head 13 Phalanges.—The proximal phalanges are proportionally somewhat shorter than in the Oligocene genus, otherwise they bear a close similarity in every respect. They are broad, depressed, strongly arched in the dorsal direction, com- paratively gently convex dorsally, and rather flat on the plantar faces. The proximal ends are deeply
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