. Advances in herpetology and evolutionary biology : essays in honor of Ernest E. Williams. Williams, Ernest E. (Ernest Edward); Herpetology; Evolution. Description of Phrynops williamsi • Rhodin and Mittenneier 67. Figure 5. Dorsal views of mandibles of P. williamsi {left, BMNH ) and P. geoffroanus (right, MZUSP 50; Rio Grande, Sao Paulo, Brazil; carapace length 250 mm, skull condylobasilar length 44 mm). Note markedly widened and flatter triturating surface in P. williamsi. Photographic enlargement slightly greater for P. geoffro- anus. Figure 6. ). Neural bones of P. williamsi (B
. Advances in herpetology and evolutionary biology : essays in honor of Ernest E. Williams. Williams, Ernest E. (Ernest Edward); Herpetology; Evolution. Description of Phrynops williamsi • Rhodin and Mittenneier 67. Figure 5. Dorsal views of mandibles of P. williamsi {left, BMNH ) and P. geoffroanus (right, MZUSP 50; Rio Grande, Sao Paulo, Brazil; carapace length 250 mm, skull condylobasilar length 44 mm). Note markedly widened and flatter triturating surface in P. williamsi. Photographic enlargement slightly greater for P. geoffro- anus. Figure 6. ). Neural bones of P. williamsi (BMNH The foramina nervi trigemini of wil- liamsi face laterally, and are not visible from the dorsal aspect of the skull. In other geoffroanus complex species the foramina face dorsally and are easily visible from the dorsal aspect. The flat- tened horizontal portion of the pterygoid flare is relatively reduced in williamsi so that only a very small portion of the pterygoid is visible from the dorsal as- pect of the skull. In other geoffroamis complex species the pterygoid flare is quite wide so that a broad expanse of pterygoid is visible from the dorsal as- pect. The postorbital wall of williamsi has a distinct sulcus jugalis and the medial por- tions of the jugal and postorbital face more posteriorly than all other Phrynops, where this wall faces more dorsolaterally and has a less weU-developed sulcus jugalis. The features of widely divergent trochleas, deep sulcus jugalis with over- lying parietal roof, posteriorly facing pos- torbital wall, shovel-like appearance 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 Williams, Ernest E. (Ernest Edward); Rhodin, Anders G. J; Miyata, Kenneth; Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : Museum of Comparative Zoology
Size: 2189px × 1141px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniver, bookcentury1900, booksubjectherpetology
