H. N. Eaton — Oriskany Sanchtone Fauniile. -t29 



species has been previously found by the writer at 

 Yawger's Woods, near Union Springs, New York, and its 

 description ^\dll be published later. The shell shows 

 possible resorption on the free margin, and is abbreviated 

 accordingly. This fossil is quite similar in appearance 

 to Meristella lata and may have been confused with the 

 latter form by A^anuxem.*' "^ It is the most abundant form. 



Spirifer arenosus is very abundant, occurring with 

 shell markings preserved and also as interior casts. 



Spirifer murchisonl is less common than S. arenosus. 



Hipparionyx proximus is not common, and occurs near 

 the top of the formation where the rock is quartzitic, the 

 rotund dorsal valve usually being preserved. 



C entronella Riid BhlpidoweUa RYQYRYQ. 



The identifications of Leptostrophia and Megalanteris 

 are doubtful and in each case rest upon the interpretation 

 of single specimens. 



It is interesting to note that few, if any, of the type 

 specimens of the Oriskany fauna in the state museum at 

 Albany are from Oriskany Falls, showing in what light 

 esteem the early collectors held the Oriskany Falls 

 occurrence. 



Correlation. 



AVhile correlations may be premature due to the paucity 

 of species, certain comparisons may be of value. Meri- 

 stella IcBvis is an Helderbergian and Lower Oriskany 

 form. Centronella ylansfagea is common in the Upper 

 Oriskany and occurs in the Onondaga. It is also plentiful 

 at Yawger's Woods, near Union Springs. Rliipidomella 

 emarginata is known in the Helderbergian but has not 

 been reported previously from the Oriskany. (This last 

 statement is based on the probability of R. emarginata 

 being a separate and distinct species, as distinguished by 

 the Maryland Survey, and not merely a variety of R, 

 ohlata.) 



Of the ten species identified beyond doubt, 80 per cent 

 is found in Schuchert's^" list of Lower Oriskany species, 

 and an equal- number appears in his Upper Oriskany list. 

 Dr. Schuchert^^ regarded the faunule as of Upper Oris- 

 kany age from the small assemblage of fossils reported 



^ Op. cit., p. 125, 1842. 



'" C. Schuchert, Lower Devonic Aspect of the Lower Helderberg and Oris- 

 kany Formations, Bull., Geol. Soc. America, 11, 292-296, 1900. 

 " Op. cit., p. 301. 



Am. Jour. Sci.— Fifth Series, Vol. I, No. 5.— May, 1921 

 29 



