. Bulletin. Natural history; Natuurlijke historie. CARDIOCEPHALUS CF. STERNBERGI 17 cylindrical teeth, with abruptly blunt conical tips; presumably the slightly worn upper incisors were of similar form. Beginning with the fourth lower tooth the diameter increases, and the exposed portion suggests a shape similar to the mid maxillary series back to the seventh, which lies just in front of the largest of the upper series. There is some indication that the eighth may have been the largest of the lower series; behind that they could not be exposed because of the overlapping jugal bones. Additional
. Bulletin. Natural history; Natuurlijke historie. CARDIOCEPHALUS CF. STERNBERGI 17 cylindrical teeth, with abruptly blunt conical tips; presumably the slightly worn upper incisors were of similar form. Beginning with the fourth lower tooth the diameter increases, and the exposed portion suggests a shape similar to the mid maxillary series back to the seventh, which lies just in front of the largest of the upper series. There is some indication that the eighth may have been the largest of the lower series; behind that they could not be exposed because of the overlapping jugal bones. Additional data on the lower dentition is supphed by several lower jaws found free among the bones in the soft clay. They reveal marked variability in number of teeth and especially in the position of the largest tooth in the jaw and number of enlarged "crushing" teeth. nos. 3681 (fig. 7) and. 3682 Figure 7. Cardiocephalus of. sternbergi Broili. Lower jaws, no. 3681 in- ternal, occlusal, and external views; nos. 3685, internal view; 3683, ex- ternal and occlusal views; 3704, external view; 3700 occlusal and external views; 3682, internal view. All x 3. COR-S coronoid suture, PSPL postsplenial. 3702 have 11 teeth, of which the eighth is the largest, the sixth to eighth all enlarged, bulbous, and laterally compressed. All teeth from the first incisor through the eighth tooth are of even height, posteriorly they are abruptly lower, though the ninth is still somewhat bulbous. A small dentary, no. 3704 (fig. 7), has 12 teeth preserved; it is so broken at the rear that it cannot be determined whether all teeth are present. The eighth and ninth teeth are much enlarged and compressed, the three (or more) behind the ninth low and small. In front of the eighth the teeth decrease in diam- eter, those in front of the sixth being slender and irregular. no. 3683 (fig. 7) has 14 teeth, of which the eleventh is largest and the tenth also considerably enlarged
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