CA RB ONIFER O US A ND PERM I A N FORMA TIOXS 9 



layers and in some of them are large numbers of this minute 

 Crustacean or a closely related species. 



The Carlisle quarry is located on the northern edge of the 

 rather steep bluff some distance south of the Nemaha River. It 

 is nearly one mile north of the Gilbert quarry, and six miles west 

 and 3 + miles north of Auburn. This is at the northern edge 

 of the upland south of the Nemaha River and the farthest 

 north that the Cottonwood limestone was found. In this quarry 

 the base of the Cottonwood stone is about twenty feet higher 

 than in the Gilbert quarry. The section of the G. W. Carlisle 

 quarry is as follows : 



Feet Feet 



4. Shaly limestone - - - - - - - - i yi = 7 % 



3. Massive limestone - - - - - - - 2^5^ 



2. Shale - - - - - - - - - - iX = 3^ 



I. Coito}i'WOod \\me.s,t.oi\t. Bottom of quarry - - - 2>^= 2j^ 



Below the Cottonwood stone on the slope of the hill are thin 

 ledges of smooth limestone alternating with shales. There is 

 one stratum of limestone which on a weathered surface is rough 

 and cellular something like the "dry bone" limestone in Kansas. 

 There are also some reddish shales and the rocks, which for 

 sixty feet below the Cottonwood limestone are partly exposed, 

 resemble to some extent the upper rocks of the Wabaunsee forma- 

 tion in Kansas. These rocks are somewhat fossiliferous and in 

 a bluish-gray shaly limestone from twenty to thirty feet below 

 the Cottonwood limestone the following species were collected : 



Aviciilopecten occide7italis (Shum.) M. & W. (r). 



Pletiropho7'ns subcostatiis M. & W. (?) Two rather large specimens 

 which resemble the figures of this species (juite closely (rr). 

 Allorisma {Sedgwickia) cf. topekaensis (Shum.) (Meek) (rr). 

 Edinotidia sp. (rr). 

 Bellerophon sp. (rr). 



In the region west of Auburn the highest rock found in place 

 is the Cottonwood limestone with the shaly limestones imme- 

 diately on top. The country to the west of the Nemaha county 

 (juarrv rises from lOO to 125 feet higher, but a somewhat hasty 

 search failed to reveal anv ledges of rock in place, all being 



