Troodon formosus, Leidy 1857, Leidy, 1857

Lambe L. M., 1902, New genera and species from the Belly River Series (mid-Cretaceous), Geological Survey of Canada Contributions to Canadian Palaeontology 3, pp. 25-81 : 47

Troödon formosus , Leidy.

Troödon formosus , Leidy. 1857. Proc. Acad. Nat. Sci. Philadel., vol. viii, p. 72, and 1860, Trans. Amer. Philos. Soc. Extinct Vertebrata from tiie Judith river and Great Lignite formations of Nebraska, p. 147, pi. 9, figs. 53, 54 and 55.

Two teeth from Red Deer river, below the mouth of Berry creek, agree with Leidy's type iu every essential particular and are evidently referable to his species.

One of the specimens has eleven denticles on either side of its cutting edge and is slightly worn, near the apex, on its less convex side. The other has eleven denticles on one edge and is similarly worn near the top, but one or two serrations are broken oft near the base of the opposite edge so that nine only can be counted. The hollow bases of both teeth are imperfect below.

Belly River series. Red Deer river, 1901.

This species is placed provisionally with the Lacertilia.