IOO UNIVERSITY OF COLORADO STUDIES 



be of great importance, but much of the material on hand is unavail- 

 able for such an investigation on account of the lack of exact locality 

 labels. Better records are being kept of all material brought in now, 

 and it is possible that by platting the fossil localities and indicating the 

 faunal associations upon the geologic and topographic maps, when they 

 are published, results of considerable consequence to geological investi- 

 gations along the plains bordering the foothills of the Front Range 

 may be obtained. 



Sphenodiscus sp. — A small fragment showing part of several sutures 

 was found at the brick kiln east of the University Hospital. The 

 sutures, so far as they can be traced, resemble 5. beecheri more nearly 

 than any other species, but its identity is not certain. 



Baculites compressus. — A few specimens have been found near Hay- 

 stack Butte, on Left Hand Creek, and one specimen having the com- 

 pressed form, but not showing the sutures, was found at the brick kiln 

 on Boulder Creek near the University. The species is common at 

 Fossil Creek, near Fort Collins. 



Baculites ovatus. — Very abundant at both brick kilns south of Boul- 

 der Creek and at numerous other points. 



Baculites anceps. — One specimen in the collection from Bear Canon, 

 south of Boulder. 



Scaphites nodosus. — Widely distributed, found in this vicinity at the 

 mesa southeast of the Chautauqua Grounds, Four Mile Mesa (four 

 miles north of Boulder), and Haystack Butte. 



Heteroceras cochleatum. — Several specimens from Table Mountain, 

 on Left Hand Creek, and from the field west of Haystack Butte, we have 

 referred to this species, described by Meek and Hayden, the type speci- 

 men of which was lost before reaching Washington, and is therefore not 

 available for comparison. One small specimen shows slender, somewhat 

 curved spines, but the spines are usually represented by nodes which are 

 interior casts of the hollow bases. 



Heteroceras nebrascense. — One fine specimen found by Dr. Stanton 

 is in the Museum. It is described in the Proceedings oj the Colorado 

 Scientific Society, Vol. II, p. 186, and is of importance because it includes 

 the deflected body whorl characteristic of the genus. 



