152 POTTS VILLE FAUNA OF OHIO 



Genus Textularia Defrance 



Textularia sp. 

 PI. VI, figs. 1, 2 



Description. Test elongate, tapering, in widest portion the width 

 equal to about two-thirds the length, regula** in outline. Segments 

 numerous, broad, much compressed longitudinally, convex on outer 

 edge, nine to eleven present on the specimens examined, last segment 

 apparently smaller than those immediately preceding; sutures deeply 

 impressed. 



Dimensions. Length 1.5 mm.; width 1 mm. 



Remarks. The form described above is associated with Fusulina 

 secalica (Say) and Girtyina veniricosa (Meek and Hay den) in the Upper 

 Mercer flint of Perry, Muskingum, and Coshocton counties. The 

 remains, however, are universally very fragmentary and are seen only 

 as longitudinal sections at various angles when the flint is examined 

 under the microscope. Probably several species of Textularia are 

 present, but the poorly preserved material renders specific determina- 

 tion impossible. Representatives of the genus are rare. 



The forms here referred to resemble T. eximia d'Eichwald from the 

 Carboniferous rocks of England, Scotland, and Russia, and may pos- 

 sibly represent a variety of that species. The outline of T. eximia is 

 more irregular and the width in proportion to the height is somewhat 

 less. The apparently smaller size of the last segment of the Ohio 

 forms also presents a notable difference, but this character may be 

 due to a large extent to the position of the sections. The general form 

 more closely resembles that of T. gibbosa d'Orbigny, but the segments 

 are less gibbous and more numerous than in the latter species. 



Horizon and locality. Upper Mercer flint: Muskingum County, 

 Localities 28, 21, 43, r; Coshocton County, Locality 72, r. 



Genus Nodosaria Lamarck 



Nodosaria sp. . 



Remarks. Fragments of Protozoa with straight, slightly tapering, 

 rod-like outline which have the segments uniserially arranged have 

 been referred to the genus Nodosaria. These forms are very minute, 

 measuring less than one millimeter in length. Several species may be 

 present, although on account of the imperfect condition of the material 

 at hand no attempt at identification beyond a generic determination 

 was made. 



Horizon and locality. Upper Mercer flint: Muskingum County, 

 Localities 28, 29, r. 



