632 EDWARD M. KINDLE 



S pirifercumberlandias a 



». Rensselaeria sp r 



Beachi suessana c 



Dalmanella cj. perelegans r 



Gypidula pseudogaleata r 



Southwest of Altoona the Oriskany shows about the same htho- 

 logic and faunal characteristics as near Bellwood. 



The Oriskany, as seen in the Altoona section in the eastern part 

 of the town of Ahoona, represents a facies differing both Hthologi- 

 cally and faunally somewhat from the same horizon as it generally 

 appears elsewhere. The rock, which is an extremely fine-grained, 

 soft, buff sandstone, contains one or more species of Beyrichia in great 

 abundance. Other common species are the following: 



Chonetes sp. Pterinopecten sp. 



Anoplotheca dichotoma Dalmanites sp. 



Rhipidomella cj. ohlata Conularia sp. 



Spirijer sp. 



Marcellus fauna. — Only three species have been recognized in the 

 Marcellus shales. These are characteristic Marcellus forms, and 

 are as follows : 



Strophalosia truncata r 



Leiorhynchus limitare a 



Styliolina fissurella a 



Exposures which probably represent the Marcellus in excava- 

 tions in East Altoona yielded no fossils. 



Hamilton. — The shales and sandstones of the Hamilton have 

 afforded the following species : 



Tropidoleptus carinatus Palaeoneilo cj. hellistriata 



Anoplotheca Camilla Orthonota cj. parvula 



Chonetes scitula Grammysia arcuata 



Chonetes vicinus Grammysia hisulcata 



Spirijer tullius Aviculopecten cj.princeps 



Spirijer mucronatus Coleolus aciculum 



Martinia subumbona Pleurotomaria sp. 



Stropheodonta perplana " Phacops rana 

 Reticularia jimbriata 



These are all well-known species in the New York Hamilton. 

 Spirijer tullius is common in the upper part of the section, and 

 appears to be confined to this portion of the section, as it is reported 



