. An introduction to the osteology of the mammalia . n have epiphyses at each end. The presternum is compressed and produced forwards inthose species in which the clavicle is absent or rudimentary,as the Aguti, the Hares, and the Capybara. In the latter itmuch resembles that of the Horse or Tapir. Order UNGULATA.—In the Ruminantia there are usuallyseven segments altogether in the sternum (Fig. 35). Thepresternum is narrow, rounded in front, and bearing the firstpair of sternal ribs close to its apex. The succeeding piecesgradually widen, the posterior segments of the mesosternumbeing square, f
. An introduction to the osteology of the mammalia . n have epiphyses at each end. The presternum is compressed and produced forwards inthose species in which the clavicle is absent or rudimentary,as the Aguti, the Hares, and the Capybara. In the latter itmuch resembles that of the Horse or Tapir. Order UNGULATA.—In the Ruminantia there are usuallyseven segments altogether in the sternum (Fig. 35). Thepresternum is narrow, rounded in front, and bearing the firstpair of sternal ribs close to its apex. The succeeding piecesgradually widen, the posterior segments of the mesosternumbeing square, flat, and rather massive (especially in theGiraffe) ; they are hollowed at the middle of their lateralborders. The xiphisternum is thin and flat. VII.] UNGULATA. 97 In the Pig (Fig. 36) and Hippopotamus the presternum iscompressed and keeled ; the articular facets for the firstpair of ribs are close together on its upper surface ; but themesosternum is broad and flat, the first segment beingtransitional, compressed in front, and broad
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbones, bookyear1885
