Report of the State Geologist. 263 



the base is a coarser layer in which Spirifer wMcronatuSy Conrad, is 

 abundant. The shales contain the following species: 



Spirifer mucronatus^ Conrad. 



Jjiorhynchus midticosta, Hall. 



Athyris spiriferoides, Eaton. 



Amhocodla umhonata, Conrad. 



Orthis Vanuxemi, Hall (?). 



Orthoceras. Fragments of large and small forms. 



Nucula (?). 



Granimysia. 



Panenka retusa, Hall (?). 



Nuculites oblongatus, Conrad. 



Conularia undulata, Conrad (?). 



Atrypa reticularis, Linne (?). 



A small specimen, probably the young of the above species (see 

 Pal. N. Y., vol. iv, pi. 53, Fig. 3). 



About one mile south of 498 D, and east of Leonardsville is a ledge 

 of arenaceous, coarse shales some 8' in thickness. The exposure is on 

 the hill-side east of the river and highway, and is called 498 E. Fos- 

 sils are not common, all of the following species being rare: 



Spirophyton velum, Vanuxem. 



Segments of crinoid stems. 



Rhynchonella Sappho, Hall (?). 



Paracyclas lirata, Conrad (?). 



Leptodesina Mogersi, Hall. 



A half mile further south, a small creek affords another exposure of 

 nearly 12'. South of the creek near the first cross-road leading east- 

 ward, is 498 F. The rock consists of coarse, arenaceous shale, very 

 similar in lithologic appearance to 498 E, but contains more fossils. 

 The altitude of these shales is higher than that of 498 E. 



The fauna is as follows: 



Spirifer 'inucronatus, Conrad. 



Atnbocoelia umhonata, Conrad. 



Rhynchonella. Specimens too imperfect for specific identification. 



Tropidoleptus carinatus, Conrad. Small specimen, but evidently 

 young of this species. 



Rhynchonella prolifica, Hall (?). 



Paracyclas lirata, Conrad. 



Grammysia. 



Microdon {Cypricardella) bellistriatus, Conrad. 

 1893. 34 



