274 POTTSVILLE FAUNA OF OHIO 



Phillipsia trinucleata Herrick 

 PI. XVI, fig. 9 



1887 Phillipsia trinucleata. Herrick, Bull. Den. Univ., Vol. 2, p. 64, PI. 1. Fig. 23; 

 PI. 2, Fig. 32; PL 3, Fig. 21. 

 Coal Measures: Flint Ridge, Ohio. 



Remarks. Several small pygidia from the Sharon ore are here 

 referred to Phillipsia trinucleata, but they differ from Herrick's species 

 in the absence of the minute granules on the surface. These granules, 

 however, are so minute that they may easily have been destroyed. The 

 form is relatively common in the middle and upper Pottsville formation, 

 especially in the Lower Mercer and Black Flint members where some 

 specimens show distinct traces of a finely granulose surface. 



Horizon and locality. Sharon ore: Scioto County, Localities 2 (r), 

 6 (c). Lower Mercer member: Muskingum County, Localities 27, 43, 

 c; Licking County, Localities 46 (r), Flint Ridge, 47 (r), 48 (c). Upper 

 Mercer member: Muskingum County, Locality 68, r. Black Flint: 

 Jackson County, Locality 87, c; Vinton County, Locality 91, r. 



PHYLUM VERTEBRATA 

 Class Pisces 

 Fish Remains 



Remarks. Fish remains were found at several horizons in the 

 Pottsville formation, in the Sharon, Bear Run, Lowellville, and Boggs 

 members. They are, however, rare, and are represented by isolated 

 teeth and a few plates. 



Horizon and locality. Sharon ore: Scioto County, Locality 2, r. 

 Bear Run member: Vinton County, Locality 17, r. Lowellville mem- 

 ber ?: Muskingum County, Locality 20, r; Mahoning County, Locality 

 22, r. Boggs member: Vinton County, Locality 25, r. 



END 



