Wappinger Valley Limesto7\es. 143 



ground and to the railroad track, near the southern end of the 

 cut, and are more abundant in the shale. Road master Joseph 

 D. JSTeal very kindly put at my disposal a gang of the railroad 

 employees to make the necessary excavation. Mr. Palmateer, 

 who has charge of this " section," rendered very efficient 

 service in conducting the work, and showed much skill in de- 

 tecting fossils. 



The species collected consists of a trilobite, a Leperditia, and a 

 Kutorgina, all undescribed, and a Hyolithes, probably ''Billingsi." 

 As the latter has a large geological range, it would scarcely indi- 

 cate the horizon, but the other organisms appear definitely to 

 indicate the Paradoxides horizon in their character and affin- 

 ities. Well defined specimens are very rare, and have been 

 procured only by breaking up a large quantity of rock ; but in 

 certain thin layers, fragments of these fossils are very numer- 

 ous. On account of the covering of soil, it is impossible to 

 determine the boundary line between these Paradoxides beds, 

 and those known to be of the Olenellus group, three quarters 

 of a mile north on Stissing Mountain. It is probable however 

 that the outcrop in the gulley at the station is of the latter 

 group. It is equally impossible at present to determine the 

 division line between these Paradoxides beds and the Potsdam 

 strata doubtless overlying them, which latter are entirely simi- 

 lar in lithological characteristics. 



No other locality of fossils of the Paradoxides horizon has 

 yet been found. The only fossils of Paradoxides types previ- 

 ously reported from New York State, are those found by Mr. 

 C. D. Walcott of the U S. Geological Survey, which he states 

 that he is inclined to refer to the Paradoxides zone.* I have 

 not been able to find any of these in the Stissing locality. 



It may be observed that the stratigraphic position of the 

 Stissing Paradoxides fauna is in harmony with the view which 

 now seems likely to meet with general acceptation, that if the 

 Olenellus and Paradoxides faunse are not synchronous, the 

 former should be regarded as the earlier deposit. It gives me 

 pleasure to acknowledge the very kind and valuable assistance 

 of Mr. C. D. Walcott in determining the relations of my 

 specimens to typical Cambrian fossils. 



A description of the species determined is here appended. 



Hyolithes Billingsi f Plate VI, fig. 1. 



About half a dozen tubes of Hyolithes have been found in 

 the calcareous shale : they are from eight to twelve millimeters 

 in length, and from, three to four in diameter at the aperture. 

 Most of them are poorly preserved, showing little more than a 



*This Journal, III, vol. xxxvii, 1889, pp. 385, 387. 



