Aublysodon, Leidy, 1868

Marsh, O. C., 1892, Notes on Mesozoic vertebrate fossils, American Journal of Science 260, pp. 171-176 : 174

Aublysodon, Leidy, 1868 .

In the same publications above cited, Dr. Leidy also described and figured, under the name Deinodon , a number of teeth which he regarded as pertaining to carnivorous Dinosaurs, but later, in 1868, he made a new genus, Aublysodon , for some of these teeth which differed materially in form from those known to belong to such Dinosaurs. * The teeth regarded by Leidy as characteristic of Aublysodon are represented in figures 35—45, Plate IX , of the Transactions above quoted, and the best preserved tooth of this series, which Leidy suspected to be an incisor, is shown in figures 41-45 . The latter figures are carefully reproduced on Plate III, figure 4 , of the present article, and two other similar teeth are represented on the same plate. They all have the same characteristic chiselshaped crowns, covered with a thin coat of enamel, and show indications of wear.

The teeth referred by Leidy to the genus Aublysodon and many others of the same general character since discovered may be divided into the four following groups, all the specimens of which appear to be somewhat curved either to the right or left: '

(1) Large teeth ( Leidy’s figures 37-40 ) having both edges crenulated, and the posterior ridge between them broad. The wear of the apex is apparently posterior.

Figures

figures 35—45, Plate IX

figures 41-45

Plate III. Figure 1.—Sternal bone of Claosaurus annectens. One-eighth natural size. a, seen from above; b, seen from below. Figure 2.—Left coracoid of Cimolopteryx rarus, Marsh. Natural size, a, front view; b, inuer view; c, back view; cl, lower eud. Figure 3.—Tooth of Palaeoscincus latus, Marsh, a, natural size; b, c, d, twice natural size. Figure 4.—Tooth of Aublysodon mirandus, Leidy. Natural size, a, front view, with sections; b, side view. (After Leidy.) Figure 5.—Tooth of Aublysodon amplus, Marsh. Natural size, a, side view; b, back view; c, front view. Figure 6.—Tooth of Aublysodon cristatus, Marsh. Twice natural size, a, side view; b, back view; c, front view .