372 GEOLOGICAL SURVEY OF THE TERRITORIES. 



submitted to tlie writer for examination, that lias proved to be the 

 forerunner of our knowledge of the Tertiary fauna of Wyoming, as 

 developed in these pages. 



Clupea. 



Two species of the genus, to which belong our Shad and Herring, 

 have been detected in the Green Eiver shales. 



Clupea Immilis. 



A small species, the one above referred to as being the first fossil 

 discovered in the Tertiary formation of Wyoming. It is very abundant 

 in the Green Kiver shales, and measures 3J inches in length. 



Clupea pusilla. 



A species about half the size of the preceding, described^ by Pro£ 

 Cope. 



OSTEOGLOSSUM. 



Osteoglossum encaustum. . 

 Three to four feet in length. Described by Prof. Cope. 



AsiNEOPS, Cope. 

 Asineops squamifrons. Asineops viridensis. 

 Two species of a peculiar genus, described by Prof. Cope. 



Erisihatopterus, Cope. 



Erismatopterus Eicl^secJceri. 



A cyprinodont fish, 3 to 4 inches in length, of a peculiar genus, 

 described by Prof. Cope. 



Lepidosteus. 



ft 



Lepidosteus glabe^\ Lepidosteus Whitneyi. 

 Two species of bony-gars, indicated by Prof. Marsh. 



Amla.. 

 Amia Neicherrianus. Amia depressus. 

 Two species of mud-fish, indicated by Prof Marsh. 



