. Breviora. 8 BREVIORA No. 398 The dorsal orbital edge is bordered by two supraorbitals. There is some variation in the relative lengths of these elements; in MCZ 12898 and probably also in MCZ 12883 (Fig. 2) the posterior element is slightly longer than the anterior element, whereas in MCZ 12891 (Fig. 3A), the posterior element is slightly shorter than the anterior one. The posterior orbital edge is bordered by a narrow dermosphenotic, which has an ex- panded dorsal end, and the ventral orbital edge by two in- fraorbitals. The anterior infraorbital is expanded anteriorly, while the posterior
. Breviora. 8 BREVIORA No. 398 The dorsal orbital edge is bordered by two supraorbitals. There is some variation in the relative lengths of these elements; in MCZ 12898 and probably also in MCZ 12883 (Fig. 2) the posterior element is slightly longer than the anterior element, whereas in MCZ 12891 (Fig. 3A), the posterior element is slightly shorter than the anterior one. The posterior orbital edge is bordered by a narrow dermosphenotic, which has an ex- panded dorsal end, and the ventral orbital edge by two in- fraorbitals. The anterior infraorbital is expanded anteriorly, while the posterior infraorbital is expanded midway along its length. In MCZ 12883 (Fig. 2), the maxilla has been displaced so that its posterior part is overlapped by the preopercular. The preopercular is so thin in this region, however, that the outline of the maxilla is clearly seen as a ridge. The upper jaw mar- gin is steeply inclined, but lies at right angles to the anterior edge of the subopercular. The maxillary teeth are pointed (MCZ 12894, 12895, 12898, and 12901),' and appear to be present onh' along the anterior half of the maxillar)- border. There are about 20 teeth in the upper jaw row. The snout is best preserved in MCZ 12893, 12891 (Fig. 3A), and 12894 (Fig. 3B). The nasal borders the anterior or- bital edge and is in contact dorsallv with both the frontal and rr(l). 2nnm A B Figure 3. Pseudobeaconia bracaccinii Bordas. A. MCZ 12891» Snout regon, right side unless otherwise indicated. B. MCZ 12894. Snout region, left 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: 2071px × 1206px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniversitymuseumofcomparative, bookcentury1900
