162 POTTSVILLE FAUNA OP OHIO 



specific identification could be made owing to the poorly preserved 

 condition of the material. Probably several species are present. 



Horizon and locality. Lower Mercer member: Muskingum 

 County, Localities 27, 28, r. 



Genus Pinnatopora Vine 

 Pinnatopora whitii Foerste 



1887 Glauconome whitii. Foerste, Bull. Den. Univ., Vol. 2, p. 78, PI. 7, Figs. 4 a-c. 



Coal Measures : Flint Ridge, Ohio. 

 1887 Pinnatopora whitii. Foerste, Bull. Den. Univ., Vol. 2, p. 87. 



Remarks. Pinnatopora whitii has been found only in the Lower 

 Mercer limestone of Muskingum and Licking counties where it is of 

 fairly common occurrence. The longest specimen obtained measures 

 13.5 mm. A number of excellently preserved individuals are among 

 the collections studied which differ in no way from the description and 

 figures of Foerste 's species. 



Horizon and locality. Lower Mercer limestone: Muskingum 

 County, Localities 29, 43, 45, r; Licking County, Localities 47, 48, c. 



Pinnatopora sp. 



Remarks. A specimen belonging to the genus Pinnatopora was 

 obtained from the Upper Mercer member and probably represents a 

 different species than P. whiiii. The state of preservation, however, 

 is too poor to permit specific identification. 



Horizon and locality. Upper Mercer member: Coshocton County, 

 Locality 70, r. 



Genus Septopora Prout 

 Septopora biserialis (Swallow) 



1858 Synocladia virgulacea ? Swallow, Trans. St. Louis Acad. Sci., Vol. 1, p. 179. 

 (Not S. virgulacea Phillips) 

 Lower Permian : Valley of the Cottonwood, Kansas. 



Remarks. Septopora biserialis is an abundant and widely dis- 

 tributed bryozoan in the Pottsville formation of this State. It appears 

 in the Boggs limestone and continues throughout the middle and upper 

 parts of the formation, but occurs most abundantly in the Lower Mercer 

 and Black Flint members. 



Horizon and locality. Boggs limestone: Muskingum County, 

 Locality 28, r. Widely distributed throughout the Lower Mercer, 

 Upper Mercer, and Black Flint members, a. 



