326 



Report of the State Geologist. 



having a greasy feel. This shale is unevenly laminated, somewhat fissile, and 

 contains no fossils whatever. It is followed by a thin band of semi-bitumin- 

 ous shale approaching a shaly limestone. The fossils in this are Styliolina 

 flssurella and Ten iae e lites graoilistriatus with an occasional flattened spore. 

 This is followed by the Conodont bed described by Hinde, nowhere over three 

 inches thick. The rock is mainly made up of the joints of crinoid stems, and 

 of fish remains. Conodonts are plentiful. The following forms have been 

 described from this bed.* 



f Prioniodus erraticus Hinde. 

 P. abbreviatus, H. 

 P. clavatus, H. 

 %V. Panderi, II. 

 P. (?) oblatus, II. 

 ^Polygnathus princeps, H. 

 || P. solidus, H. 

 P. crassus, H. 

 || P. pennatus, H. 

 |j P. tuberculatus, H. 

 IIP. cristatus, H. 

 \Y. truncatus, II. 

 JP. linguiformis, II. 

 P. (?) simplex, H. 



The first of these was also noted by Clarke in the Naples beds. (See 

 Bull. 16 U. S. Geol. Surv.) 



A single specimen of Lincjulei spatulata and one of Zdorhynchus quadri- 

 costatus was obtained from this rock. Occasional specimens of (?) Amboeodia 

 preeu?nlomi still occur, showing that the Hamilton conditions have not quite 

 passed away. As a whole, however, the affinities of the fauna of this rock are 

 with that of the Genesee, both the " Conodonts " and the numerous fish scales 

 and plates pointing strongly to this conclusion. There seems to have been no 

 adequate reason why Hinde should refer this, bed to the Hamilton instead of 

 the Genesee, more especially as it is so closely united with the overlying 

 Styliolina limestone in many places, and often contains what might be called 

 concretionary masses of this rock, i. e., small masses of rock composed <>f 

 St yUolina fissurella. 



* Quart. Journ. Geol. Soc. 1879, p. 359. 



t Also recorded from the Cleveland shales and from the Corniferous of Ohio. 

 t Also recorded from the Genesee shale. 



|| Also identified by Clarke in the black shales of the Naples beds (Sixth Ann. Rep. State Geol. 1887, pp, 30-32, pi. i). 



