. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. FIG. 84.—-Skull of Arriblystoma punclatum, after Wiedersheim. Letters as in fig. 68. frontal has a ventral process which limits the cranial cavity in front; there is usually a prefrontal and a septomaxillary may be developed on the postero-lateral part of the nasal capsule. A supratemporal is always lacking, the squamosal extending up to the parietal. The upper jaw is composed of premaxillaries and (except some perennibranchs, fig. 85) maxillaries; a jugal is always absent and the quadratojugal,. FIG. 85.—Skull
. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. FIG. 84.—-Skull of Arriblystoma punclatum, after Wiedersheim. Letters as in fig. 68. frontal has a ventral process which limits the cranial cavity in front; there is usually a prefrontal and a septomaxillary may be developed on the postero-lateral part of the nasal capsule. A supratemporal is always lacking, the squamosal extending up to the parietal. The upper jaw is composed of premaxillaries and (except some perennibranchs, fig. 85) maxillaries; a jugal is always absent and the quadratojugal,. FIG. 85.—Skull of Proteus, after Wiedersheim. For letters see fig. 68. formed in the larva, fuses with the squamosal. In the roof of the mouth are the large parasphenoid, frequently with teeth, and a pair of vomero-palatines, the choanae lying behind the vomerine portion, which is farther back than in the dipnoi. In the lower jaw Meckel's cartilage persists, its hinder end forming the articulare, while in front it is surrounded by the dentary and splenial, each bearing teeth. In the larvae the branchial skeleton is nearly typical, there being a hyoid and four gill arches. In the adult, with the loss of aquatic respiration, the posterior arches are. 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 Kingsley, J. S. (John Sterling), 1854-1929. Philadelphia, P. Blakiston's son & co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1912
