GEOLOGICAL SURVEY OF THE TERRITORIES. 475 



COLORADO SPRINGS, COLORADO. 



Cretaceous, No. -i. 



Names. * Eemarlcs. 



1. Inoceramus Fragmeuts of casts. 



2. CaH'mta (?) Fragmeuts. 



3. Anisomyoii alveolus, Meek. 



LAST FOOT OF BRIDGER PEAK, FOUR MILES NORTH OF FORT ELLIS, 



MONTANA. 



Names. Remarks. 



1. Ophioderma (!) Bridgerensis, 



Meek.* 



2. Grypluva Obscure casts of a small species. 



3. Avkula Casts. 



4. Finna A rather large, narrow species, v/itli 



longitudinal costae. 



5. Inoceramus Fragments of casts. 



6. Crassatella Casts. 



7. Panopwa (?) Fragments. 



8. Pholadomya Fragments. 



9. TvrrlteUa Casts. 



10. Gyrodes. 



CINNABAR MOUNTAIN, YELLOWSTONE VALLEY, MONTANA. 



Names. Remarks. 



1. Ostrea Casts of a small species. 



2. Inoceramus Fragments of casts. 



3. TrUjonia Of Cretaceous tyi)e, nearly allied to 



4. Corlmya T. Evansi, Meek. 



4. Corimya, or Thracia Casts of a small species. 



5. BacuJltes A small slender species, likel>. as^jer, 



Morton. 



6. Scaphites ventricosus, Meek. 



ROCK CREEK. 



Names. Remarks. 



1. Inoceramus. 



2. Ammonites percarinatus, H. 



and M. 



3. Ammonites, (undetermined sp.) 



4. Scaphites Warrenanus, M. and 



H. 



5. Scaphites larv if or mis, M. and IT. 



6. Scales and other fragments of 



fishes. 



*A small Opliiurian, with di^k dcprossod, nearly cii'cular, and only 0.17 inch in 

 breadth, showing on the dorsal sitlc ten ovate-sntrigonal radial plants, that are joined 

 together over the inner ends of tbe arms, so as tt) i'orin five pairs; arms small, or only .i lion t 

 0.75 inch in length, and at tl>eir inner endsO.OG inch in breadth; middle row of ariii-iiieces 

 on the dorsal sli<le. slightly wider than long, and hexagonal in form ; marginal pieces 

 about as large as tlie niiihlie ones, si-en somewhat edgewise from aliove, and licaiing a 

 row of very small, short si)ines. Ventral side nnlaiown. The speeimeu is not well 

 preserved. I'erhaps I should call it Vpliiolcina JJridgcrcnsis. ' 



