An Account of the Middle Silurian Rocks of Ohio and Indiana. 199 



for the shaly material occasionally found between these beds. In the 

 crinoidal rock at this locality were found Ilhenus, large pygidium like 

 the elongated form of ///. ambiguus, Daltnanites verrucosus ? pygidium, 

 Orthoceras, of the type of O. annulatu/u, Plectambonites transvcrsalis, 



•elongated laterally, 'Orthis calligramma^ few plications, also var. 



fissiplicata, Orthis hybrida, Meristina nitida, Atrypa reticularis, both 

 forms, with finer, and with coarser plications, RhynchoneUa irulianensis ? 

 Rhychonella neglecta, somewhat broader anteriorly than type specimens, 

 Pisocrinus gemmiformisy Stepfmnocrinus osgoodensis f Stefhanocrinus cor- 

 netti, similar to figure 10 in the Indiana report describing this species, 

 the radial plates not as straight as in figure 12, Ccramopora lab ecu la, 

 with the central cells more oblique, producing a central stellate ap- 

 pearance, not attached to other fossils, Striatopora gorbyi, and Strepte- 

 las/ua ( Duncanettd) borealis. 



Going from Osgood south westward down the railroad, another 

 quarry is found about a mile distant from town. Here the upper beds 

 of the Laurel formation contained crinoidal remains as well as the 

 basal portions, as at the quarry north of town. The best beds for 

 crinoidal remains occured about 9 feet above the base of the quarry, 

 and contained frequent specimens of Pisocrinus gemmiformis, and 

 Stepliauocriuus osgoodensis, as well as a few specimens of Atrypa 

 reticularis. It will be remembered that the crinoidal beds in the Day 

 ton limestone in western Ohio are also found in the upper half of the 

 series, and that Pisocrinus gemmiformis, and Stephanocrinus osgoodensis 

 were found in the quarry of James Carl, about three and a half miles 

 south-west of Lewisburg. 



