. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. 22 VEKTEBEATA. No. 56. Posbrotherium Wilsonii, Leidy. Skull and Lower Jaw. This specimen belonged to an individual just reach- ing adult age. The form of the head, if restored, wordd probably most approach that of the existing Musks. The ramus of the lower jaw is remarkable for its breadth and for an angular apophysis as in the Camel, Carnivores and most Rodents. The P. had three molars and four premolars in each ramus of both jaws, and probably two upper canin
. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. 22 VEKTEBEATA. No. 56. Posbrotherium Wilsonii, Leidy. Skull and Lower Jaw. This specimen belonged to an individual just reach- ing adult age. The form of the head, if restored, wordd probably most approach that of the existing Musks. The ramus of the lower jaw is remarkable for its breadth and for an angular apophysis as in the Camel, Carnivores and most Rodents. The P. had three molars and four premolars in each ramus of both jaws, and probably two upper canines and eight lower incisors. The original was discovered in 1847, in the Mauvaises Terres (Miocene or White River Group), Nebraska, and is preserved in the Academy of Natural Sciences, Philadelphia. Price, $ No. 57. Oreodon Culbertsonii, Leidy. Skull, and Lower Jaw. This re- markable Ungulate constitutes one of the links necessary to fill up the wide gap between existing Rumi. nants and the extinct Anoplotheria. The form of the cranium pro- per approaches that of the Camel; but generally the skull bears most resemblance to the Anoplotherium. It differs strikingly from the latter in the existence of post-orbital arches, in the greater size of the orbits, and in the presence of deep lachrymal depressions. The sagittal crest is prominent; and the forehead is convex. The molars have a ruminant character; while canines and incisors exist in both jaws and form with the molars almost unbroken rosvs. The dentition appears to char- acterize a ruminating Hog. This specimen was found in the Mauvaises Terres (Lower Miocene) of Nebraska, and is in the Academy of Natural Sciences, Phil- adelphia. Size, 8x5. Price, $ No. 58. Oreodon major, Leidy. Skull. This species differs apparently only in size. It was found in the Mauvaises Terres (Lower Miocene) of Nebraska, and is in the Academy of Natural Sciences, Philadelphia. Size, 11 x 7. Price, $ No. 59. Anoplotherium commune, Cuvi
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectfossils, bookyear1866
