. Advances in herpetology and evolutionary biology : essays in honor of Ernest E. Williams. Williams, Ernest E. (Ernest Edward); Herpetology; Evolution. 6 Ailcanccs in Herpctology and Evolutionary Biology. Figure 2. Dorsal (left) and ventral (right) views of the skull of Nyctanolis pernix, drawn from cleared and stained specimen with aid of microprojector. Cartilage stippled. Abbreviations: Fr, frontal; Ma, maxillary; Op, operculum; Os, orbitosphenoid; Ot, otic-occipital; Pa, parietal; Pf, prefrontal; Pm, premaxillary; Ps, parasphenoid, Pt, pterygoid portion of palatopterygoid cartilage; Pv, p
. Advances in herpetology and evolutionary biology : essays in honor of Ernest E. Williams. Williams, Ernest E. (Ernest Edward); Herpetology; Evolution. 6 Ailcanccs in Herpctology and Evolutionary Biology. Figure 2. Dorsal (left) and ventral (right) views of the skull of Nyctanolis pernix, drawn from cleared and stained specimen with aid of microprojector. Cartilage stippled. Abbreviations: Fr, frontal; Ma, maxillary; Op, operculum; Os, orbitosphenoid; Ot, otic-occipital; Pa, parietal; Pf, prefrontal; Pm, premaxillary; Ps, parasphenoid, Pt, pterygoid portion of palatopterygoid cartilage; Pv, posterior vomerine tooth patch (outline only, teeth not drawn); Qa, quadrate, Sq, squamosal; Vo, vomer. is narrow and well separated from the vomer behind it. Frontal processes of the premaxillaries are stout and well de- veloped; they arise from a narrow base as columnar structures, then immediately diverge around the large, intemasal fon- tanelle. As the processes rise dorsally and posteriorly they flatten and form the bor- ders of the fontanelle. As they flatten they become somewhat expanded. Later- ally the processes closely abut the large nasals, and posteriorly they broadly over- lap the anterior extensions of the facial portions of the frontals. The frontal proc- esses do not contact each other behind the fontanelle, but in some individuals they come very close. The frontal proc- esses terminate rather far forward, well in advance of the orbit, and of the posterior tip of the nasals. Nasals are large, but they are nonprotuberant in all females and in all but the largest male; in that individual the premaxillary bones are larger than in any other specimen and the nasal bones extend anteriorly slightly beyond the premaxillaries. The large nasals are triangular in shape, and they have strong, overlapping articulations with the facial processes of the frontals. The nasals slightly overlap the prefron- tals, and are overlapped by the anterior part of the facial processes of th
Size: 2095px × 1193px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniver, bookcentury1900, booksubjectherpetology
