The elasmobranch fishes elasmobranchfish03dani Year: 1934 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

---

The elasmobranch fishes elasmobranchfish03dani Year: 1934 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-

---

Size: 1327px × 1507px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage