199 



Dice. 



Dicellocephalus Hartti. Walcott. 



Potsdam fauna of 

 Saratoga Co., N. Y. 

 1888, fig. 2 and 2 a. 

 See Bull. 30, U. S. 

 G.S.,page62. Con- 

 fined to the Upper 

 Cambrian ( P o t s - 

 dam) formation, at 

 Saratoga, N. Y. To 

 be looked for in 

 Pennsylvania along 

 the north side of the 

 South Mounta ins, 

 and along the North 

 and South Valley 

 Hill ranges east and 

 west of Chester 

 county. — /. 



DicelloGephalus ? 

 marcoui. See Olen- 

 oides ? marcoui. 

 Lower Cambrian. 



Dicellocephalus minnesotensis. See on page 198. 



Dicolomus crassa. See Obolella crassa. Low. Camb, 



Dicranophyllum dichotomum. Lesq. Coal Flora, 1880 

 p. 553, p]. 87, figs. 9, 9a (bound between folios 560 and 561 ;) a 

 most remarkable brush like plant found by Mr. Mansfield in the 

 roof of his Darlington (Kittanning) coal bed at Cannelton, 

 Beaver Co., Pa. See Appendix. 



Dicranophylluni dimorphum, is another species from the 

 same coal bed, figured by Lesq. in Coal Flora, p. 554, pi 83, 

 figs. 1, 2, 3. The genus, established by Grand'Eury, is allied 

 to Cordaites. Lesq. p. 555. — Specimen (C, 4-7) in White's col- 

 lections (00, p. 239) on Muddy Creek, Greene Co., Pa., from 

 roof shale of Waynesburg CoaL — XV. 



Dictyophyton fenestratum. Hall, 16th An. Rt. 1863, 

 Chemung; collected by Carll from Upper Chemung in the Oil 

 Region. C. E. Hall's Ms. Rt. Dec. 30, 1876.— VLIL-LX. 



