. Description of new carnivores from the Miocene of western Nebraska. Carnivora, Fossil; Paleontology; Paleontology. PETERSON : NEW CARNIVORES PROM MIOCENE OF WESTERN NEBRASKA 237 process for attachment of muscles. On the ulnar face is a large facet for the trapezoid, which extends well back, cov- ering the base of the palmar process, referred to above. On the proximal radial angle there are well formed facets for the scapholunar; the one on the ra- dial angle is scarcely separable from the one on the palmar process. Distally there is a large obliquely placed facet for Mc. I which is concave f
. Description of new carnivores from the Miocene of western Nebraska. Carnivora, Fossil; Paleontology; Paleontology. PETERSON : NEW CARNIVORES PROM MIOCENE OF WESTERN NEBRASKA 237 process for attachment of muscles. On the ulnar face is a large facet for the trapezoid, which extends well back, cov- ering the base of the palmar process, referred to above. On the proximal radial angle there are well formed facets for the scapholunar; the one on the ra- dial angle is scarcely separable from the one on the palmar process. Distally there is a large obliquely placed facet for Mc. I which is concave from before backwards. Fig. 33. Trapezium (lm-side)of D. superbm. N size. 1, dorsal view ; 2, nrmnr view ; 3, rrfenwf view; KwV'CA- pdnan view ; lufenui ' Una/' Measurements of Trapezium. Mm. Greatest autero-posterior diameter 12 Greatest transverse diameter 7 ; vertical diameter 10 E*vv; 1-4 Trapezoid.— The trapezoid is not known, but judging from the space in the car- pus when the trapezium is placed in position it would seem that the trapezoid is larger than the trapezium which is the reverse of what is seen in Daphasnits, studied by Mr. Hatcher (I. c, p. 86) and compared by the present writer. Magnum.—The magnum has a small dorsal face, but is in general a much larger bone than is indicated by this sur- face. The dorso-radial angle has a small facet for the trapezoid and this region of the bone is much depressed, while the radial face has a great vertical diameter, due to the sharp ridge which extends up- ward, articulating radially with the scapho-lunar, and on the ulnar face with the unciform. In Cam's the ulnar face has a large dorsal and a smaller palmar facet for the unciform ; the two facets being separated by a deep groove, while in Daphccno- don the facet is uninterrupted and surrounds an excavated area in the middle and posterior portions of the ulnar face. The radial face of the magnum is also deeply excavated. The palmar tuberosity is of considerable vertical
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectpaleontology, bookyea
