. Description of new carnivores from the Miocene of western Nebraska. Carnivora, Fossil; Paleontology; Paleontology. PETERSON : NEW CARNIVORES FROM MIOCENE OP WESTERN NEBRASKA 247 Pes (PI. LXXXII).—The right hind foot of the type was found almost completely articulated. Consequently there is practically no doubt as to the true position of each bone in the pes. Astragalus. — While the main features of the astragalus are in general quite similar to those in Daphasnus felinus there are some detailed differences which are of considerable importance, and which Wk^^ mark the transition from the cond
. Description of new carnivores from the Miocene of western Nebraska. Carnivora, Fossil; Paleontology; Paleontology. PETERSON : NEW CARNIVORES FROM MIOCENE OP WESTERN NEBRASKA 247 Pes (PI. LXXXII).—The right hind foot of the type was found almost completely articulated. Consequently there is practically no doubt as to the true position of each bone in the pes. Astragalus. — While the main features of the astragalus are in general quite similar to those in Daphasnus felinus there are some detailed differences which are of considerable importance, and which Wk^^ mark the transition from the conditions found in the older type to the more modi- | H jfff'/ ^ec^ structures in the recent forms. It is ^^IffltliMi seen that the articular trochlea for the /ff wW|p||"^ tibia is more perfectly grooved in the pres- ent genus than in Daphamus, the internal and external condyles being more nearly Fig. 43. Anterior and Posterior Views of Astragalus of d. superbus. Nat. size. subequal, as in Ganis. The articulation of the tibial face of the internal condyle, however, is, widely interrupted by a broad vertical sulcus, which is not present in the recent form, nor does it entirely bisect this articulation on the astragalus of Daphostms, while in the tiger there is a similar broad area on the inner side of the internal condyle. The neck is relatively shorter, though constricted as in Daphosnus, which is due to the laterally expanded head, as in the cats. The head is inclined sharply inward and on the distal face is a large facet for the navicular, which is convex in all directions. The calcaneal facets are separated by a deep, narrow groove, and are subequal in size, the external being more oblique and less strongly concave than in Ganis. In the latter genus there is a minute articular facet for the calcaneum on the fibular face of the head. In the present genus this small facet is also present, but instead of articulating with the distal end of the calcaneum, as in the dogs, i
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