. Carnegie Institution of Washington publication. . Figs. 674 and 675.—Amyda uintaensis. Carapace and plastron of type. Xs. f>74- Carapace. 675. Plastron, 6, 8, sixth and eighth cervical vertebra; enl, entoplastron; /./, , left and right epiplastron; , , left and right hyoplastron; , right hypoplastron. The hyoplastron and the hypoplastron of the right side are complete, excepting that the extremities of the external processes are broken away (plate ioo, fig. I; text-fig. 675). On the lelt side there remains only a fragment of the hyoplastron. The right an
. Carnegie Institution of Washington publication. . Figs. 674 and 675.—Amyda uintaensis. Carapace and plastron of type. Xs. f>74- Carapace. 675. Plastron, 6, 8, sixth and eighth cervical vertebra; enl, entoplastron; /./, , left and right epiplastron; , , left and right hyoplastron; , right hypoplastron. The hyoplastron and the hypoplastron of the right side are complete, excepting that the extremities of the external processes are broken away (plate ioo, fig. I; text-fig. 675). On the lelt side there remains only a fragment of the hyoplastron. The right and the left branches of the entoplastron are present, but the median and anterior part is missing. On the right side is seen the anterior portion of the epiplastron, while the posterior part of the left epiplastron lies close to the corresponding part of the entoplastron. Judging from the fragments of these parts of the plastron that remain, the entoplastron and the epiplastra were not especially different from those of Platypeltis ferox. The hyoplastron is not co-ossified with the hypoplastron. The suture is directed inward and forward, so that the anterior bone is narrower than the one behind it. The greater portion of these bones is covered with a large callosity. This is ornamented on the external ends of the bones with pits which resemble those of the carapace, but are not so large, there being about five in a line 10 mm. long. The inner ends of the bones are smooth, hut display a cloth- like texture, produced by interwoven fibers of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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