. On the anatomy of vertebrates [electronic resource] . r of the petrotympanic forms, in the smaller Musk-deer ( Tragulus)and Antelopes ( Cephcdophus), a large ( bulla ossea: and the orbitsgain in proportional size as the bulk of the species lateral emarginations of the bony palate are usually deeperthan the median one, in true Ruminants, the reverse being thecase in the Llama and Vicugna. In Microtherium the premaxil-laries do not reach the nasals, nor yet quite in Hy&moscfius. In the skull of the BovidceI have usually seen that, al-though the full size and maturedenti
. On the anatomy of vertebrates [electronic resource] . r of the petrotympanic forms, in the smaller Musk-deer ( Tragulus)and Antelopes ( Cephcdophus), a large ( bulla ossea: and the orbitsgain in proportional size as the bulk of the species lateral emarginations of the bony palate are usually deeperthan the median one, in true Ruminants, the reverse being thecase in the Llama and Vicugna. In Microtherium the premaxil-laries do not reach the nasals, nor yet quite in Hy&moscfius. In the skull of the BovidceI have usually seen that, al-though the full size and maturedentition have been acquired, thesuture between the exoccipitals,fig. 320,11, n, and that betweenthese and the superoccipital, , remain distinct. The occipi-tal condyles, i, are wide apart, asin Antelopes and Deer. Theparoccipital, i, and fig. 321, a,descends much below the mastoid, 10 5 the exoccipitals complete theforamen magnum, above : the basioccipital has a pair of the Ox (Bos taurus)the whole of the upper surface of the cranium. Skull of the Ox {Bos taurus). is formed by the frontals, fig. 321, c: the parietals, which, atan earlier period, encroach upon the back part of the upper sur-face, are now pushed quite to the posterior or occipital deposition does not take place in the Bison, fig. 320, but thefrontals, at the interspace between the horns, are, with the con-joined parietals, 9, developed into a ridge rising above that formedby the superoccipital, 11. The petro-tympanic, fig, 320,10, 321, e,is prominent and rough. The squamosal, e, has a venous outletabove the base of the zygoma. The malar forms the lower part
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Keywords: ., bookcentury1800, booksubject, booksubjectbirds, booksubjectfishes
