. Bulletin - United States National Museum. Science. UNRECOGNIZED CALVERT CETOTHERE 139 missing lachrymal presumably was lodged between it and the posteroexternal process of the maxillary, and below it the jugal was attached by a ligament. The postorbital projection of the supraorbital process is elongated bringing its extremity in contact with the anterior end of the zygo- matic process. The supraorbital process of the frontal slopes downward from the interorbital region to its orbital rim, and except for the broad ascending process is not overlapped by the posterior border of the maxillary.
. Bulletin - United States National Museum. Science. UNRECOGNIZED CALVERT CETOTHERE 139 missing lachrymal presumably was lodged between it and the posteroexternal process of the maxillary, and below it the jugal was attached by a ligament. The postorbital projection of the supraorbital process is elongated bringing its extremity in contact with the anterior end of the zygo- matic process. The supraorbital process of the frontal slopes downward from the interorbital region to its orbital rim, and except for the broad ascending process is not overlapped by the posterior border of the maxillary. The rather slender zygomatic process of the squamosal tapers to its anterior end. The ventral profile of this process is a uniform curve; the dorsal profile rises gradually behind the anterior end and merges posteriorly with the abruptly elevated lambdoid crest on the squamosal. From a lateral view the postglenoid process extends down- ward and backward; its posterior face is flattened and its extremity is compressed anteroposteriorly. Posteriorly the squamosal is firmly ankylosed to the exoccipital. As seen from the side the contact of the parietal with the squamosal is almost horizontal ventrally and nearly vertical posteriorly. The opposite parietals meet on the midline of the inter- temporal region to constitute a short isthmus connecting the occipital portion of the skull with the interorbital region by overlapping the frontals in a rather broad sutural contact. Behind the intertemporal region the dorsal edge of the parietal is overlain by the lateral edge of the supraoccipital shield, the apex of which extends forward to the level of the anterior end of the zygomatic process. The occipital condyle is not visible when the skull is viewed from the side, since the exoccipital is directed out- ward and obliquely backward. In the temporal wall of the braincase, the alisphenoid is relatively small and is situated posterior to the base of the supraorbital process and above the p
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
