. An introduction to the osteology of the mammalia . FiG. 23.— Posterior surface of secondlumbar vertebra of Great Anteater, §.t transverse process; pz posteriorzygapophysis ; pz1, pz2, and pz$, ad-ditional posterior articular facets. FIG. 24.—Anterior surface of third lum-bar vertebra of Great Anteater, §.t transverse process ; m metapo-physis ; az anterior zygapophysis ;azl, az2, and az$, additional anteriorarticular facets. and the articulation is now by two zygapophysial surfaceson each side of the arch instead of one. In the thirteenthx thoracic vertebra a third articular facet(pz^) is de


. An introduction to the osteology of the mammalia . FiG. 23.— Posterior surface of secondlumbar vertebra of Great Anteater, §.t transverse process; pz posteriorzygapophysis ; pz1, pz2, and pz$, ad-ditional posterior articular facets. FIG. 24.—Anterior surface of third lum-bar vertebra of Great Anteater, §.t transverse process ; m metapo-physis ; az anterior zygapophysis ;azl, az2, and az$, additional anteriorarticular facets. and the articulation is now by two zygapophysial surfaceson each side of the arch instead of one. In the thirteenthx thoracic vertebra a third articular facet(pz^) is developed on the hinder margin of the lamina ofthe arch, still higher than the last additional one (pzl),and separated from it by a deep notch. This looks mainlyoutwards, and articulates with a corresponding facet (as -,Fig 24) on the anterior edge of the arch of the fourteenth 1 In the Cambridge specimen this description applies to the fourteenthand fifteenth vertebra respectively. 64 THORACIC AND LUMBAR VERTEBRA. [CHAP. vertebra, placed to th


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbones, bookyear1885