. Breviora. 12 BREVIORA No. 382 premaxillary maxillary palatine. opercle dentary coronomeckelian articular angular quadrate j ijiterhyal symplectic subopercle preopercle interopercle 1 mm Figure 7. Jaws, suspensorium, and opercular bones of Thrat- tidion noctivagus, medial view. attaches to dorsoanterior portion of quadrate bone. Entoptery- goid and metapterygoid well developed. Sphenotic and pterotic articular surfaces of hyomandibular not strongly differentiated from its main body. Hyomandibular with a distinctively shaped lamella dorsoanterior to its symplectic process, the ventral
. Breviora. 12 BREVIORA No. 382 premaxillary maxillary palatine. opercle dentary coronomeckelian articular angular quadrate j ijiterhyal symplectic subopercle preopercle interopercle 1 mm Figure 7. Jaws, suspensorium, and opercular bones of Thrat- tidion noctivagus, medial view. attaches to dorsoanterior portion of quadrate bone. Entoptery- goid and metapterygoid well developed. Sphenotic and pterotic articular surfaces of hyomandibular not strongly differentiated from its main body. Hyomandibular with a distinctively shaped lamella dorsoanterior to its symplectic process, the ventral margin of this lamina separated from symplectic process of hyomandibular by a notch. Symplectic bone relatively small, lying midway be- tween hyomandibular and quadrate but in contact with neither. Quadrate with a posterior process directed towards anterior end of symplectic. Facial bones (Fig. 6). Circumorbital series with an antorbital followed by six infraorbitals, a pattern found in generalized mem- bers of many teleostean groups, including Clupeomorpha (Nelson, 1969). Dermosphenotic greatly reduced. Infraorbitals shallow, without extensive ventral laminae. Supraorbital bone large and elongate. Nasal bones widely separated, moderate in size, bearing a tube for laterosensory 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum of Comparative Zoology, Harvard University
Size: 2084px × 1199px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniversitymuseumofcomparative, bookcentury1900
