. The American diceratheres. Rhinoceroses, Fossil; Paleontology. 446 MEMOIRS OF THE CARNEGIE MUSEUM. the sides of Mc III to which bone they he rather close with comparatively little divergence distally. All the phalanges are broad, short, and depressed. (See PI. LXIII). In Coenoptis tridactylus the metacarpals also are close to one another, but the lateral metacarpals are heavier in proportion than in D. cooki. This is also true of the bones in the hind foot. Another noticeable feature of the hind foot in C. tridactylus is seen in the proportionally larger size of the entocuneiform, which is n


. The American diceratheres. Rhinoceroses, Fossil; Paleontology. 446 MEMOIRS OF THE CARNEGIE MUSEUM. the sides of Mc III to which bone they he rather close with comparatively little divergence distally. All the phalanges are broad, short, and depressed. (See PI. LXIII). In Coenoptis tridactylus the metacarpals also are close to one another, but the lateral metacarpals are heavier in proportion than in D. cooki. This is also true of the bones in the hind foot. Another noticeable feature of the hind foot in C. tridactylus is seen in the proportionally larger size of the entocuneiform, which is not remarkable, when we consider the differences in size of the lateral metapodials in the two genera here compared. Hind Limb. The pelvis is short and broad. The area for the gluteal muscle is broadly expanded, but the supra-iliac border is emarginated as in Ccenopus of the Oli-. FiG. 34. Diceratheriuin cooki Peterson. No. 2797, Coll. Carnegie Museum. Left half of pelvis, dorsal view. X 3- gocene. The ischium and pubis are relatively short when compared with Ccenopus tridactylus, indicating quite an advance in the direction of the recent Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Peterson, O. A. (Olof August), 1865-; Carnegie Museum. Pittsburgh : Published by the authority of the Board of Trustees of the Carnegie Institute


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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpaleontology, bookyea