Adams. 1 The Upper Cretaceous . 21 



above it. The lithological characters of the limestone are men- 

 tioned, as also the occurrence of coal. Thickness, 500 feet. 



1877 — Mudge. 13 This paper is practically a reprint of the 

 previous one, but gives much additional matter concerning the 

 writer's collecting and the fossils described from the formation. 

 Concerning the Benton he makes the same limits, but states 

 that if he could spend a few days, in the field with Hayden they 

 might conclude that the lower portion of the Fort Hays is 

 Benton, and therefore calls it the Fort Hays only provisionally. 



1S?'S — JIudge. 16 This repeats largely former reports. It 

 gives a map, vertical section of the rocks of Kansas, and a hori- 

 zontal section from southeast to northwest corners of the state. 

 The Triassic and Jurassic are not represented. This allows the 

 Dakota to rest directly upon the Carboniferous, and nearly, if 

 not quite, in conformity. The Pierre and Fox Hills of the Cre- 

 taceous, as also the Eocene and Miocene, are reported to be 

 wanting. The Pliocene rests upon the Niobrara or middle Cre- 

 taceous. He again repeats Meek's inquiry about beds containing 

 Baculites anceps, and states that the beds are not Fort Pierre or 

 Fox Hills. He says that in a former report he was doubtful 

 whether the Benton is represented in Kansas. A more careful 

 examination induces him to believe that what he called Fort 

 Hays corresponds nearly in age to the Fort Benton. The upper 

 portion of the Benton is formed by a bed of limestone sixty feet 

 thick ; under this is a bed of blue shale sixty feet thick, con- 

 taining septaria. Below this are 140 feet of shales and layers 

 of limestone. The total thickness is given at 260 feet. The 

 Dakota group includes all the Cretaceous east of the Fort Benton. 

 The principal part of the paper is composed of a discussion of 

 the areal, geological and topographic features, and notes con- 

 cerning fossils described by others. 



1882 — St. John}' The Cretaceous is laid down directly upon 

 the Carboniferous floor, and, notwithstanding statements to the 

 contrary, there is marked evidence of non-conformity between 



15. Ninth An. Kep. U. S. G. S. of the Ters., 1875 (printed 1877). 



16. Fir3t Bi. Rep. Kans. St. Bd. Agr., 1877-'78. 



17. Third Bi. Rep. Kans. St. Bd. Agr., 1831-'82. 



