. Description of new carnivores from the Miocene of western Nebraska. Carnivora, Fossil; Paleontology; Paleontology. PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA Measurements of Metatarsal IV. Mm. Greatest leDgth 73 Antero-posterior diameter of head 17 Transverse diameter of head 12 Transverse diameter of distal end 13 255. Metatarsal V.— The fifth metatarsal is of about the same length as Mt. II though slightly lighter. The head is greatly expanded, especially in the transverse diameter, due to the large development of the ascending fibular pro- cess, which is much more develope
. Description of new carnivores from the Miocene of western Nebraska. Carnivora, Fossil; Paleontology; Paleontology. PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA Measurements of Metatarsal IV. Mm. Greatest leDgth 73 Antero-posterior diameter of head 17 Transverse diameter of head 12 Transverse diameter of distal end 13 255. Metatarsal V.— The fifth metatarsal is of about the same length as Mt. II though slightly lighter. The head is greatly expanded, especially in the transverse diameter, due to the large development of the ascending fibular pro- cess, which is much more developed than in Canis and nearly equal in proportion to that of Daphanus. On the posterior tibial side this process is succeeded by a heavy plantar tuberosity which extends throughout the remain- der of the plantar face and rises above the articular facet on the proximal end. The tibial face has a projecting eminence carrying an articular facet for a corresponding pit on Mt. IV already described. The facet for the cuboid is quite large ; it is slightly convex antero-posteriorly,and along the fibular border it is recurved upwards on the base of the ascending process referred to above, so that the facet is concave transversely and faces inward as well as up- ward like that of the older form. The shaft is well arched and has the usual transversely oval cross-section found in older types. The distal end is enlarged along the fibular border in about the same proportion as Mt. I is expanded on the tibial angle, giving the trochlea an oblique and asymmetrical appearance. Cynodesmus brachypus is an animal of considerably smaller size than Dapha- nodon, but Mt. V, which is represented in the type, is of very nearly equal length, though much lighter than that of Daphanodon. The ascending process on the fibular angle of the head is much larger than in Canis, but it is directed upward and outward pretty much as in the latter, and the articulation for the cuboid is small and faces directly upwa
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