Horizon and locality. Boggs limestone: Blunt Run, Muskingum 

 County (Locality 27), c. Rather common in the Lower Mercer 

 and McArthur members. 



PHYLUM MOLLUSCOIDEA 



Class Bryozoa 



Genus Tabulipora Young 



Tabulipora ohioensis (Foerste) 



1887 Stenopora ohioensis. Foerste, Bull. Den.^Univ., Vol. 2, p. 85, PI. 7, Figs. 12a-e. 

 Coal Measures: Flint Ridge, Ohio. 



Although rare in the Boggs member, this bryozoan is common 

 in higher horizons, but is particularly abundant and characteristic 

 in the Lower Mercer limestone. 



Horizon and locality. Boggs limestone: near Hopewell P. 0., 

 Muskingum County (Locality 26), r. 



Genus Fenestella Lonsdale 

 Fenestella shumardi Prout? 



1858 Fenestella shumardi. Prout, Trans. St. Louis Acad. Sci., Vol. I, p. 232. 



Carboniferous L.S.: Organ Mts., New Mexico. 

 1872 Fenestella shumardi? Meek, U. S. Geol. Surv. Nebr. p. 153, PI. 7, Figs. 3a-c. 



Upper Coal Measures: Nebraska City, Nebraska. 



Lower Coal Measures: Ohio. 



A very small, delicate species of Fenestella is found in the Lowell- 

 ville and Boggs limestones as well as throughout the higher members 

 of the Pottsville formation, which has been referred with some doubt 

 to F. shumardi, a form originally described from a far distant locality. 

 However, this form agrees very closely with Meek's interpretation 

 and figures of Prout's species, and is also reported by him to be present 

 in the Lower Coal Measures of Ohio. If Meek's form is really iden- 

 tical with F. shumardi, there seems little doubt that the Ohio forms 

 likewise belong to that species. 



Horizon and locality. Lowellville limestone: near Holbein, 

 Muskingum County (Locality 20), r; Boggs limestone: Blunt Run, 

 Muskingum County (Locality 27), r; Rock Cut, Muskingum County 

 (Locality 28), c; Symmes Creek, Muskingum County (Locality 29), r; 

 throughout upper members of the Pottsville formation. 



Genus Septopora Prout 

 Septopora biserialis (Swallow) 



1858 Synocladia virgulacea (?) Swallow, Trans. St. Louis Acad. Sci., Vol. I, p. 179. 

 (Not S. virgulacea Phillips). 

 Lower Permian: Valley of the Cottonwood, Kansas. 



An abundant and widely distributed bryozcan in the Potts- 

 ville formation of Ohio. It makes its appearance in the Boggs mem- 



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