. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. 32 THE BONES AND JOINTS. Fkr. Origin of the suspensory cpt Cartilaginous epiphyses of the pterygoid bone, from the cartila- ginous suspensorium. J Quadrato-jugal bone. pt Pterygoid bone. sp Origin of suspensorial cartilage from the skull. sp' Hinder arm of same. sp" Anterior ami of same. Fig. 19. L 1 L^hN by a movable joint. Externally the articular head curves somewhat abruptly into the bony substance (Fig. 18 pt) of the pterygoid bone. 10. The maxillary bones, ossa cartilage maxillaria superiora, (^uvier (Figs. 10,
. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. 32 THE BONES AND JOINTS. Fkr. Origin of the suspensory cpt Cartilaginous epiphyses of the pterygoid bone, from the cartila- ginous suspensorium. J Quadrato-jugal bone. pt Pterygoid bone. sp Origin of suspensorial cartilage from the skull. sp' Hinder arm of same. sp" Anterior ami of same. Fig. 19. L 1 L^hN by a movable joint. Externally the articular head curves somewhat abruptly into the bony substance (Fig. 18 pt) of the pterygoid bone. 10. The maxillary bones, ossa cartilage maxillaria superiora, (^uvier (Figs. 10, («p) from the skull, with attachment -, j ., ^ \ c\ m\ of the pterygoid ; front view. Ciir- ' • ^ -^ ?' * tilage shown by stippling. , „ -r,, -.^,,-ttt -r^. . * ^ ° Cuvier, /. c, p. 3S9, PI. XXIV, Figs, i, 2 k k. —Dugès, n. 4, maxiUo-jiigal. — Parker and Bettany, J. c, maxillary bones. These are elongated, curved bones, narrower behind, broader in front, and forming with the quadrato-jugals the bony support of the face. The suj)erior surface is convex and directed outwards, the inferior surface is grooved and bears teeth along the outer edge of this groove. From the upper and inner border of the anterior half of this bone a process {pro- cessus frontalis) passes upwards, which articu- lates with the nasal bone. The anterior ex- tremity of the bone articulates with the premaxillary bone, the posterior with the quad- rato-jugal. The maxillary bone articulates at its an- terior end (Fig. 19 n') with a process of the cartilaginous capsule of the nose. The broad plate of cartilage (Fig. 19 v), under. 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 Ecker, Alexander, 1816-1887; Haslam, George. Oxford, Clarendon Press
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