304 0. C. Marsh—New Tertiary Reptiles. 
from the dorsal region, were united together by beveled edges. 
The teeth were pleurodont. The pterygoid bones supported 
minute tubercular teeth, resembling those of Glyptosaurus. _ 
In the species here described the teeth are rodlike, with 
small bases, and obtuse striated summits, which are crowned by 
a low longittdinal ridge. The frontals are thick, and loosely 
united by suture. Between the orbits, their sides are. nearl 
Measurements. 
Space occupied by eight teeth near middle of lowerjaw,- 11:2 ™ 
es occupied by four anterior teeth of upper jaw,---- 5 
idth of band of small teeth on pterygoid, _----~------ 4°6 
Width of frontals at posterior margin,.-_-.-.--------- 13° 
Width between orbits, i Ue ee 
The known remains of this species were found by the writer, 
last autumn, at Grizzly Buttes, Wyoming. 
Tinosaurus stenodon, gen. et sp. nov. 
A small carnivorous Lizard is indicated among our Wyom- 
ing fossils, by part of a lower jaw, with two teeth, in excellent 
preservation, and by some other fragmentary specimens. - 
teeth preserved are from near the middle of the lower Jaw. 
Their crowns are short, much compressed, pointed, and curve 
backward. They are separated from each other about half the 
diameter of the crown. The anterior tooth is the larger, and 
Measurements. 
Space occupied by three lower teeth,....-.------------ 45 OF 
eight of crown of lower tooth above jaw,------------- dl 
Antero-posterior diameter at base,.......-.----------- 1°8 
Transverse diameter of jaw below teeth,....----------- 2° 
The remains which can now with certainty be referred "i 
this species are from Henry’s Fork, Wyoming, and were foune — 
by Mr. J. F. Page, in September last. 
