. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. 34 THE BONES AND JOINTS. 14. The vomers, vomer (Figs. 19, 20 v). Cuvier, , p. 389, PI. XXIV, Figs, i, 2 11.—Dugès, n. 6.—Parker and Bettany, , vomer. A pair of flat bones, placed liorizontally on the under surface of the cartilaginous nasal capsule in the triangular space between the palatine bone and the anterior portion of the arch of the jaw. They limit the outer border of the floor of this caj^sule, which lies in a groove on the dorsal surface of the bone. The outer border of each bone has three processes, and betw
. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. 34 THE BONES AND JOINTS. 14. The vomers, vomer (Figs. 19, 20 v). Cuvier, , p. 389, PI. XXIV, Figs, i, 2 11.—Dugès, n. 6.—Parker and Bettany, , vomer. A pair of flat bones, placed liorizontally on the under surface of the cartilaginous nasal capsule in the triangular space between the palatine bone and the anterior portion of the arch of the jaw. They limit the outer border of the floor of this caj^sule, which lies in a groove on the dorsal surface of the bone. The outer border of each bone has three processes, and between them two notches ; the hinder of these notches bounding the posterior nares. The inner borders of the two bones touch, and the under surface of each bears a transverse row of small, pointed teeth. Fo-. 15. The mandible, maxilla inferior (Fig. 31). Cuvier, ,p. 398, PI. XXIV, Figs, i, irst.—Duges, n. 16,17, 18,19.— Parker and Bettany, , mandibular arch. The mandible consists of two bony arches united by ligament in the middle line, and each formed of four pieces. These are, (i) the angulosplenial, a strong', bony piece (,^i,^i), which forms the in- ferior and internal part of the lower jaw; below, it ex- tends posteriorly, as far as the articula- tion ; in front, it is attached to the den- tary. In the greater' part of its length it has a groove directed upwards and out- wards (C, b), and above has a pro- cess which repre- sents the processus coronoidens : (2) the dentary [A 2, B 2), a bony lamella which rests on the A Mandible of Ra7ia esculenta, from above, nat. size. B External view of left side, 1 , • . „ . , , . , !? twice nat. size. C Angiilosplenial, I 1. Angulosplenial. 2. Dentaiy. 3. Mentonieckelian. 4. 4' Meckel's cartilage. ((. Rudimentary processtis coronoidens. b. Groove for Meckel's Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration a
Size: 1714px × 1457px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpublisheroxfordclarendonpre
