Researches on the Structure, Organization, and Classification of the Fossil Reptilia VII Further Observations on Pareiasaurus . mur above and the astragalus below. The tibia is very similar, ingeneral character, to the bone figured in Phil. 1889, B, Plate 25, which maybe referred to Tapinocephalus. It differs in proportion from the tibia which Iobtained in association with the Tarnboer specimen of P. bombidens. AND CLASSIFICATION OF THE FOSSIL EEPTILIA. oDD The tibia is a massive bone, strong and relatively short, expanded proxiinally,contracted towards the lower third of the shaft, an
Researches on the Structure, Organization, and Classification of the Fossil Reptilia VII Further Observations on Pareiasaurus . mur above and the astragalus below. The tibia is very similar, ingeneral character, to the bone figured in Phil. 1889, B, Plate 25, which maybe referred to Tapinocephalus. It differs in proportion from the tibia which Iobtained in association with the Tarnboer specimen of P. bombidens. AND CLASSIFICATION OF THE FOSSIL EEPTILIA. oDD The tibia is a massive bone, strong and relatively short, expanded proxiinally,contracted towards the lower third of the shaft, and oblique distally, where itdescends in an inner anterior border to articulate with the tarsus. It is 9| incheslong in front, where its distal end is convex from side to side, and about 6 incheswide. The proximal surface is truncated, transversely expanded, 7| inches wide,4 inches deep on the inner side and 2^ inches deep on the outer side. Two longitu-dinal grooves descend in front from the proximal end, defining a median elevatedridge, which is situate below a median elevation on the superior articular surface. Fig. Bones of the right hind leg, in natural position as found, but separated from each other. T, tibia; /,proximal articulation for the femur, F9 distal end of fibula, showing compressed articular surfacefor the proximal tarsal; fa, a, astragalo-calcaneum, showing oblique surface of astragalus for the tibia,and transverse surface of calcaneum for the fibula. (The segments F and T are not wanting,) That eminence probably fitted between the condyles at the distal end of the larger part of the articulation corresponds with the larger femoral condyle, just asthe smaller part corresponds with the smaller femoral condyle. Distally, the bonehas a crescentic surface, similar to that in the tibia figured (Phil. 1889, B,Plate 23) as ulna.# The external border measures 7 inches transversely, while theinternal border measures 8 inches. This difference is ow
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Keywords: ., bookauthorseeleyh, bookcentury1800, bookdecade1890, bookyear1892
