CA RB OXIFER O US A XD PERM I A N FORMA TIONS 1 6 3 



Procfuctus nebrasceiisis Owen (rr). ' ■, 



Spiriferina kcniucke7isis Shum. (rr). 



Fusiilina cy/indrica Fischer (a). Abundant in certain layers. 



ArchcEOcidaris sp. (rr). Spine. 



Bcllcrophon carbonarius Cox (?) (r). Imperfectly preserved specimens 

 of the size and shape of this species ; one specimen shows concentric striae 

 that are not mentioned in the description. 



Crinoids. (c). Segments of stems. 



The yellow shales, No. 6, contain a larger number of species 

 and more numerous specimens. The list is as follows : 



Afhyris (^Seint7iii/a) subtilita (Hall) Newb. (c). 

 Chonetes vcrneuiliana N. & P. (aa). 

 Chonetes granulifera Owen (c). 

 Productus longispiniis Sowb. (rr). 

 Producttis Jiebrascensis Owen (r). 

 Spirifer {Martinid) plaftoconvexus Shum. (r). 

 Spirifer cameratus Morion (r). 

 Derbya crassa (M. & H.) H. & C. (rr). 

 Spiriferina kefituckefisis Shum. (rr). 

 Lophophyllum proliferwn (McChes.) Meek (rr). 

 Rhoinbopora lepidodendroides Meek (c). 

 Septopora biserialis (Swallow) Waagen (c). 

 ChcEtetes cf. carbonarius Worthen (rr). 

 Scaphiscrinus (?) hemisphcEricus (Shum.) Meek (r). 

 Crinoid, loose plates and also segments of stems. 



Along the bluff on the northern side of the Platte River, 

 opposite the Parmlee quarry, in Sarpy county, are several quar- 

 ries that afford excellent exposures. These qnarries contain 

 reddish shales above the light gray limestone and when seen from 

 the southern side of the river in bright sunshine form a very 

 striking feature of the landscape. The Rock Island railroad 

 follows the valley just below the bluff and the quarries have 

 been worked extensively for both building stone and rock bal- 

 last. The Green quarry, near the eastern end of the quarries, 

 gives a good section from a little above the railroad level nearly 

 to the crest of the bluff. It may be considered as divided into 

 a lower and an upper section, separated by thirty-nine feet of 

 covered slope. A few rods to the east is another small quarr}^ 



