. Bulletin of the Department of Geology. Geology. 1911] Merriam and Bryant: Omphalosaurus. 331 teriorly on each element the teeth decrease in size. The area having the best preserved teeth shows them in irregular rows. There are at least five rows anteriorly, but only three distinguish- able at the posterior extremity of the element. This arrange- ment, however, is not so apparent on the rest of the dentigerous area, where the teeth are broken off or are crushed together. No part of the elements exposed appears to be edentulous, teeth being found out to the Fig. 2. Omphalosaurus (?),
. Bulletin of the Department of Geology. Geology. 1911] Merriam and Bryant: Omphalosaurus. 331 teriorly on each element the teeth decrease in size. The area having the best preserved teeth shows them in irregular rows. There are at least five rows anteriorly, but only three distinguish- able at the posterior extremity of the element. This arrange- ment, however, is not so apparent on the rest of the dentigerous area, where the teeth are broken off or are crushed together. No part of the elements exposed appears to be edentulous, teeth being found out to the Fig. 2. Omphalosaurus (?), sp. Portion of a dentition in which the teeth show a tendency toward a low-conical form. No. 19453, natural size. The other specimen (no. 19453) apparently shows several of the bones belonging to the skull, and the cross-section of an element bearing nine or ten teeth similar to those on the type specimen. As nearly as can be determined on the omphalosaur-like material available the teeth rest in distinct pits. The pits vary from two to six millimeters in depth and from three to fifteen millimeters in greatest diameter. In all cases the depth of the pit is less than the greatest transverse diameter, and is nearly the same as the height of the tooth-crown. The crowns are quite uniformly dome-shaped, with a nearly circular cross-section. The largest tooth measures fifteen milli- meters in greatest transverse diameter. The enamel does not appear to be perceptibly roughened. The short, bluntly-conical roots show no radial folding of the dentine as in the 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 University of California, Berkeley. Dept. of Geology. Berkeley : The University Press
Size: 2062px × 1212px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectgeology, bookyear1902
