. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. 128 ANATOMY OF VERTEBRATES. by the allsplienoid. Thus in the bone 6, we have all the characters of that so numbered in figs. 81, 83, and 85, and called ' ali- sphenoid ' in the fish. The chief modification is due to the greater developement of 3, fig. 90, in Chelonia, which overlaps 6 as well as 2. The parietals, figs. 90, 91, are united, as in Cyprinoid and Ganoid fishes, by the sagittal suture, and are much expanded both transversely and longitudinally, overlapping, in the Turtle, the 91. Skull of Turtle {Chcloiw mydm)
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. 128 ANATOMY OF VERTEBRATES. by the allsplienoid. Thus in the bone 6, we have all the characters of that so numbered in figs. 81, 83, and 85, and called ' ali- sphenoid ' in the fish. The chief modification is due to the greater developement of 3, fig. 90, in Chelonia, which overlaps 6 as well as 2. The parietals, figs. 90, 91, are united, as in Cyprinoid and Ganoid fishes, by the sagittal suture, and are much expanded both transversely and longitudinally, overlapping, in the Turtle, the 91. Skull of Turtle {Chcloiw mydm) superoccipital, fig. 90, 3, and articulated with it and the mastoids, fig. 91, 8, behind; and with the frontals, ib. n, before. Each parietal, also, sends down a long vertical plate, ?', fig. 90, which unites with the alisphenoid, 6, and orbitosphenoid, lo, this ossifica- tion taking the place and function of the latter neurapiiphj'ses in fishes. The bone, figs. 89, 91,8, which articulates with the paroccipital 4, parietal 7, and postfrontal 12, which aftbrds the surface of attach- ment to the upper end of the tympanic 28, enters into the for- mation of the acoustic chamber in some Emydians, and projects outward and backward to give insertion to the latissimus colli and trachelomastoideus, repeats the chief and essential characters of tlie bone so numbered, and called 'mastoid' in Fishes, figs. 75, 76,83,85,8: and forms the transverse process of the parietal vertebra. The forward continuation of the vertebral bodies from 5 remains cartilaginous: the lower half of the sides of the prosencephalon. 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 Owen, Richard, 1804-1892; Cornell University. College of Veterinary Medicine. Flower-Sprecher Veterinary Library. fmo. London, Longmans, Green
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Keywords: ., bookauthorowenrichard18041892, bookcentury1800, bookdecade1860
