Palaeoscincus costatus, Leidy, 1856

Leidy, J., 1856, Notice of remains of extinct reptiles and fishes, discovered by Dr. FV Hayden in the Bad Lands of the Judith River, Nebraska Territory., Proceedings of the Academy of Natural Sciences of Philadelphia 8, No. 7, pp. 72-73 : 72

1. Palaeoscincus costatus , Leidy.

The genus and species are founded on a single specimen of a tooth of a lacertian, discovered by Dr. Hayden.

The crown of the tooth is palmate, with eight radiating costae terminating at the margin in more or less developed points. The fang is flattened cylindrical, and is hollow; and it expands into a ridge surrounding the base of the crown. Breadth of the crown 4 lines, length 2 1/2 lines; width of the fang 2 lines, thickness 1 line. Whole length of the specimen 4 lines.