5 2 COLOKAUO COLLEGE STUDIES. 



pterosaurs, turtles, etc.: toothed birds, etc.: a rich and 

 unique fauna of unusual importance and interest, described 

 by Cope, Marsh, Williston, etc. 



THE LISBON SHALES. 



Named from Lisbon, Kansas, near which they outcrop. 

 Dark-bluish and brownish shales. Seen above the Smoky 

 Hill chalk in ]>ogan and Wallace counties, Kansas, and 

 Elbert county, Colorado. Contain concretions of yellow 

 phosphate of iron. (Fide Prof. G. H. Failyer.) Sup- 

 posed to be lower Ft. Pierre. Fossils: Inoceramus barabini, 

 Baculitcs, limpets, etc. 



THE ARICKAREE SHALES. 



Named from Arickaree river, on which they occur in 

 Cheyenne count}-, Kansas, and an adjoining part of Colo- 

 rado. Light-colored, olive, yellowish and brownish-gray 

 shales. Referred to the lower part of the Fox Hills divis- 

 ion. Fossils: Pteria fibrosa, Scaphites nicollettti, etc. 



