Tongue cordiform, shallowly notched behind and only slightly free posteriorly; vomerine teeth 2-3, situated on small triangular elevations between ovoid inner nares; openings to vocal sac large, one situated along inner posterior edge of each mandibular ramus.
"A Review of the Middle American Tree Frogs of the Genus Ptychohyla"
William E. Duellman
That of Jonas ramus, which is perhaps the most circumstantial of any, cannot impart the faintest conception either of the magnificence or of the horror of the scene-or of the wild bewildering sense of the novel which confounds the beholder.
"Selections From Poe"
J. Montgomery Gambrill
Right ramus of lower jaw, magnified two diameters.
"The Student's Elements of Geology"
Sir Charles Lyell