Aublysodon lateralis, Cope, 1876

Cope, E. D., 1876, Descriptions of some vertebrate remains from the Fort Union beds of Montana, Proceedings of the Academy of Natural Sciences of Philadelphia 28, pp. 248-261 : 248

Aublysodon lateralis , sp. nov.

Established on some teeth, one of which is of the size of those of the A. horridus , and which differ in some important particulars. The posterior crenate ridge is as in that species, lateral in position, separating a posterior face from the lateral at a right angle. The posterior face is separated from that of the other side by a very obtuse angle. The anterior aspect of the crown is witlhout crenate cuttinlg edge, but the latter is present as a border to the front, passinig alonig the front of the sidle opposite to that wlhich bears the posterior angle. It is directed laterally, anld projects beyond an openi groove wlich follows its posterior base. The base of the crown is broad elliptic in section. Enamel smooth.

A much smaller tooth was found with the preceding, and presented similar characters, excepting that the posterior face is not so strongly truncate.

Measurements.		M.
Length of crown preserved.		.025
Diameter of base of crown	long	.018
	short	.010
Width of posteriorface		.006
Length of smaller crown		.011
Long diameter of base of do..		.006

The apices of both crowns are considerably worn by use. Both were found by Charles H. Sternberg of my exploring party .