. The elasmobranch fishes. Chondrichthyes. 64 THE ELASMOBRANCH FISHES posteriorly to the middle portion of the hyomandibula {Torpedo, fig. 63). Such a union results from the method of growth of the hyomandibula. A proc- ess extends from the anterior angle of the upper segment which, in the adult Torpedo, forms the suspensorium or hyomandibula. This part suspends the mandibular arch while the lower segment is attached to the posterior part of the hyomandibula (fig. 69). In some of the other rays the lower segment may not be attached at all to the hyomandibula, but may be united with the poste-.
. The elasmobranch fishes. Chondrichthyes. 64 THE ELASMOBRANCH FISHES posteriorly to the middle portion of the hyomandibula {Torpedo, fig. 63). Such a union results from the method of growth of the hyomandibula. A proc- ess extends from the anterior angle of the upper segment which, in the adult Torpedo, forms the suspensorium or hyomandibula. This part suspends the mandibular arch while the lower segment is attached to the posterior part of the hyomandibula (fig. 69). In some of the other rays the lower segment may not be attached at all to the hyomandibula, but may be united with the poste-. 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 Daniel, J. Frank (John Franklin), 1873-1942. Berkeley,Calif. , University of California press
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