III. 



INVERTEBRATE PALEONTOLOGY OF THE PLA- 

 TEAU PROVINCE, 



TOGETHER WITH NOTICE OF A FEW SPECIES FROM LOCALITIES BE- 

 YOND ITS LIMITS IN COLORADO, 



BY CHARLES A. WHITE, M. D. ' 



WASHINGTON, D. C., February 1, 187G. 



SIR: I have the honor to present the following preliminary report upon 

 the paleontological collections made by parties under your direction during 

 the years 1868 to 1875, inclusive; more especially upon the invertebrate 

 fossils. 



The collections are large and important, comprising, besides the inver- 

 tebrate fossils noticed and described on following pages, vertebrate remains 

 from strata of the Carboniferous, Jurassic, Cretaceous, and Tertiary periods; 

 and plants from those of the Cretaceous and Tertiary periods. The plants, 

 from strata of the last named period especially, are abundant and interest- 

 ing, comprising as they do representatives of the classes Acrogens, Endo- 

 gens, and Exogens, the latter being greatly in excess of the others. 



Among the vertebrate fossils are the remains of fishes (Selachians, Gan- 

 oids, and Teliosts), reptiles, and mammals. Besides these, a small collection 

 borrowed from Mr. W. Cleburn contains part of the skeleton of a Passerine 

 bird which was discovered by him in the Lower Green River Group, near 

 Green River Station, Wyoming Territory. Some of the other discoveries 

 of vertebrate remains are also worthy of notice here, among which may 

 be mentioned two or three species of teliost fishes at the base of the Creta- 

 ceous series of Wyoming and Utah, and fragments of the skeleton of a very 



