CONO. 



140 



lows & Genth's coll. on Marshall creek, Monroe Co., 1875, in 

 Hamilton shale, (G. B. S. 1888).— F///^, YIII c. 



Conocardium meekanum. 



IXl. 



hf?W'IZZX.30 

 Conocardium 



(Hall, Trans. Alb. Inst. Vol. 

 4, 18f)6. Whitfield, Bull. 

 3, Am. Mus. 1882, plate 

 7). Collett's Indiana Rt. 

 1882, page 347, plate 30, 

 IndJSi^r'^ PL 30, ^*^ ficrg. 21, 22, 23, of a speci- 

 men from Alton, 111. — Sub-Garhoniferous ( Warsaw), XL 



Conocardium prattenanum. (Hall, Trans. Alb. Inst. Vol. 

 4,1858. Whitfield, Bull. 3, Am. Mus. 1882). 

 Collett's Indiana Rt. 1882, page 347, plate 30, 

 figs. 21, enlarged i times, umqnQ specimen from 

 Alton, 111. — S^ih-carhoniferous ( Warsaw) form- 

 ation. XI. 



trigonale. {Pleurorhynchus trigonalis. 



Hall, page 171, fig. 67, 6, 

 6a. Corni/ferous of Up- 

 per Helderberg forma- 

 tion. In Pennsylvania, 

 in Monroe Co., near 

 Stroudsburg, south of 

 McMichaePs creek on 

 the Gap road, and else- 

 where, in the Corniferous lime- 

 stone. White, F6, p. 120.— F/// 

 a. — Hall remarks that this shell is 

 certainly unlike the Pleurorhyn- 

 chits cuneus of the Scoharie grit. 

 (Geology of the Fourth District, 

 H LSS] ^ N. Y., p. 172.) 



Conocardium ? Specimen 804-96, Marshall's cr., Monroe 



Co. Hamilton, VIII g, 



Conocephalites adamsi. See Ptychoparia adamsi. L. C> 



Conocephalites arenosus. See Ptychoparia adamsi. Z. C. 



Conocephalites aurora. See Ptychoparia ouangondiana, 

 var. aurora. M, O. See foot note to page ISJf, alove. 



Conocephalites hayleyi. See Conocoryphe bayleyi. M. C 



