. Elementary text-book of zoology [electronic resource]. Zoology. 336 CHORD AT A. To this cranium are loosely attached a number of bones belonging to visceral arches. Anteriorly are paired pre-jnaxilla bearing teeth, and inaxilhE without teeth. These are supposed to be connected with the labial cartilages of the skate. The first or mandibular arch ossifies into the palatines attached to the ect-ethmoids, the pterygoids with meso- and nietapterygoids, and the guadj'ates which form the upper half (or palato-quadrate chain) and the articular, angular, and dentary forming the lower half or mandibl
. Elementary text-book of zoology [electronic resource]. Zoology. 336 CHORD AT A. To this cranium are loosely attached a number of bones belonging to visceral arches. Anteriorly are paired pre-jnaxilla bearing teeth, and inaxilhE without teeth. These are supposed to be connected with the labial cartilages of the skate. The first or mandibular arch ossifies into the palatines attached to the ect-ethmoids, the pterygoids with meso- and nietapterygoids, and the guadj'ates which form the upper half (or palato-quadrate chain) and the articular, angular, and dentary forming the lower half or mandible. An articulation is formed between the articular and the quadrate. Fig. 236.—Lateral View of Cod's Branchiostegal Rays c. h., Cerato-hyal. d, Dentary. /., Frontal. , Hyomandibular. .0., Inter-operculum. /., Lacrymal. 9/1, Maxilla. Nasal. o, Operculum. , Parasphenoid. , Premaxilla. , Preoperculum. q., Quadrate. , Supra-occipital. , Sub-operculum. The second or hyoid arch consists in its upper half of a hyo-mandi- bular attached to the otic region, bearing four opercular bones on its posterior border (the pre-opercular, opercular, suh-opercular, and inter- opercidar'), and joined to the quadrate by a small sy?nplectic. Its lower half forms a chain of hyoid bones which carry on their posterior surface seven branchio-stegal rays. The four branchial arches consist of pharyngo-, epi-, cerafo- and hypo-branchials, united below by the basi-branchiah. The pharyngo- branchials fuse to form the superior pharyngeal bones already noticed,. 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 Masterman, Arthur Thomas; Parsons, John Herbert, Sir, 1868-1957, donor; S. H. Lazarus (Firm); University College, London. Library Services. Edinburgh : E. & S. Livingstone
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1901
