102 UNIVERSITY OF COLORADO STUDIES 



Inoceramus vanuxemi. — Abundant at Four Mile Mesa, and a few at 

 Haystack Butte and the brick kilns near the University. 



Inoceramus proximus. — If this is to be admitted as a species distinct 

 from vanuxemi (and it seems better so to consider it for the present), it 

 is found at Haystack Butte. 



Inoceramus oblongus. — Some small specimens of this species have 

 been brought in from Left Hand Creek. They are found in enormous 

 quantities at Fossil Creek. 



Ostrea inornata. — Specimens answering to the description of this 

 species, except that they are not attached by the whole lower valve (not 

 of specific importance) are found at Haystack Butte and Table Mountain. 



Lucina occidentalis. — Common at many places both north and south 

 of Boulder. 



S peer tola obliqua. — No specimens are in the collection, but the original 

 description of the species was based upon specimens from Left Hand 

 Creek, about midway between Boulder and Longmont. 



Callista ? pellucida. — A few specimens labeled Boulder, answering to 

 Meek and Hayden's description of this species, are in the collection, but 

 the exact locality where they were found is unknown. 



Mactra gracilis. — Found in a crowded mass at Haystack Butte. 



Fish. — A portion of a vertebral column, unidentified, was found by 

 Mr. Fair on the Mesa south of the Chautauqua Grounds. 



Insect. — A single wing, unidentified, was found by Mr. Fair at one 

 of the brick kilns near the University. 



Plants. — Fragments of wood, leaves, and sea weeds are occasionally 

 met with in the Pierre shales, but have not been identified. 



Dr. T. W. Stanton, in his paper before the Colorado Scientific Society 

 in 1887, reported the following species about five miles north of Boulder, 

 some of which are not represented in the museum : 



Inoceramus vanuxemi Ptychoceras mortoni 



Anisomyon borealis Heteroceras nebrascense 



Baculites ovatus Heteroceras tortum 



Placenticeras placenta Heteroceras cochleatum 



Scaphites nodosus Helicoceras stevensoni 



Ancyloceras jenneyi Helicoceras mortoni 



