THE NEBRASKA PERMIAN 363 



is entirely obliterated with soil and debris. Numerous slight 

 exposures of Permian rocks were found that were above the 

 cement mill section and with them Semimda argentea (Shep.) but 

 no other fossil. 



At Holmesville there were numerous exposures and many of 

 them had been opened as quarries. To the north of the depot 

 there is a quarry face over a quarter of a mile in length and aver- 

 aging twenty feet in height. The limestones of this quarry are 

 all thick bedded and one band has a peculiar habit of changing 

 in color from a bluish to a cream color within a distance of 

 twenty feet. South of the bridge there is a thin bed of oolite 

 that thickens rapidly toward the south. It is very fossiliferous, 

 but thins out before reaching the quarries north of the depot, 

 where the following section was made: : 



No. 5. Soil, sand and drift - - - 9 feet 

 No. 4. Yellowish to bluish limestone with geodes filled 



with quartz crystals, in some places cellular and 



containing fossils - io^4 feet 



No. 3. Bluish limestone - 4 feet 



No. 2. Cherty limestone - - - 6 feet 



No. 1. Unexposed to the river - - 14 feet 



Total - - 43 J4 feet 



The oolite has not been included in this section but belongs 

 between Nos. 3 and 4, which are quarried for building purposes. 

 The following fossils were taken from the oolite and No. 4. 



Productus semireticulatus Martin. 

 Meekella striatiocostata Cox. 

 Aviculopecten occidentalis Shum. 

 Aviculopecten sp. 

 Aviculopecten sp. 

 Schizodus ovatus M. and H. 

 Schizodus wheeleri Swal. 

 Schizodus sp. 



Yoldia substitute M. and H. 

 Bakevellia parva M. and H. 

 Edmondia sp. 

 Edmondia sp. 

 Loxonema sp. 



