. PiGUEE I'TS —Vertical EecUon through cranium of linoceras ajfine. Marsh (No. IS Figure 179.—The same specimen ; seen from above. ps. parietal supra-occipilal suture; fp. fronto-parietal suture; o. occipital condyle: ol. olfactory lobes of brain; p'. parietal protuberance ; s. supra-occipital crest. Both figures are one-eighth natural size. In the type of this species (immber 1574), the snout tapers, and the nasals are divided by a distinct median suture. The nasals are well preserved, and much resemble those of number lO-ll, but are more perfect. As in number 1040, they are thoroughly co-oss
. PiGUEE I'TS —Vertical EecUon through cranium of linoceras ajfine. Marsh (No. IS Figure 179.—The same specimen ; seen from above. ps. parietal supra-occipilal suture; fp. fronto-parietal suture; o. occipital condyle: ol. olfactory lobes of brain; p'. parietal protuberance ; s. supra-occipital crest. Both figures are one-eighth natural size. In the type of this species (immber 1574), the snout tapers, and the nasals are divided by a distinct median suture. The nasals are well preserved, and much resemble those of number lO-ll, but are more perfect. As in number 1040, they are thoroughly co-ossified to the extreme point, which is directed obliquely downward. The nasal protuberances are placed obliquely, and are flattened on their outer anterior surface. They are directed outward and upward, and are elongate- oval in section, the long axes of the ovals making- about a right angle with each other in front of the snout. The maxillaiy protuberances are elevated, but of moderate size, and are connected across by a rounded ridge. The parietal protuberances present a moderately sharp ridge on their anterior faces, and are somewhat club-sliaped. They were connected across the top of the skull by a rounded ridge. The foramen magnum is transversely oval, and rises nearly to the same heiglit as the occipital condyles. The post-glenoid process is robust. The occipital crest bears a rather prominent, but rounded, ridge along the median line, above the foramen magnum. The palate is moderately excavated in front, and the palato-maxillary foramen is opposite the first premolar. The diastema is thick, strong, sliort, and straight. The vomer is preserved in this specimen, finnly lodged in a groove in the upper surface of the maxillaries
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Keywords: ., bookcentury1800, bookdecade1880, booksub, booksubjectpaleontology
