155 



Fig. 35. Poli/t/niitlnnf ud- 

 sutus, X 13 (after Hinde). 



PoLYGXATHi'S XASUTUs. Hiiule. ( Fi«!;. 35.) (Quart. 

 Jour. Geol. Soc, Vol. XXXV., p. .364, PI. XVI.) 



Distinguishing ( 'hnnicters. — Narrow, 

 elouo-ate. strai<»ht base; bi-oad. flattened 

 main tooth, projectinji,- in a line with 

 the base; spur blunt, with three spines; 

 denticles twenty, of various lengths. 



Found at Xoi-th P]vaiis. in the (Jenesee shale, at Section 1 

 (?). (Hinde.) 



PoLY(JNATHUS PKiNX'EPs. Hiude. (Fig. 30.) (Quart. Jour. 

 Geol. Soc, Vol. XXXV.. p. 365; PI. XVI.) 



Distinguishing Cliaracters. — Relatively large size; narrow, 

 elongated base; 

 teeth similar, eleven, 

 large, robust, some- 

 what oval in sec- 

 tion; longest in the ^ '^^^ 



center Fig. so. roly<jnathusprincepi<.x 13 (after Hindf). 



Found in the (^onodont bed of the Genesee, at Section J. 

 ( Hinde. ) 



PoLYoxATurs soLinus. Hinde. (Fig. 37.) (Quart. 

 Jour. Geol. Soc, Vol. XXXV., p. 305. PI. XVII.) 



Distinguishing diameters. — Base short, 

 very thick, wide; teeth sub-equal, short, 

 stout, obtuse, seven to eleven, closely 

 arranged. 



the 



Fig. 37. 

 solid ux, 

 Hinclej. 



Poli/gnuthiis 

 X 13' (after 



Quart. 



Found in the Conodont bed of 

 Genesee, at Section 1. ( Hinde.) 



PoLYdXATHUS CRASSUS. Hiude. (Fig. 38.) 

 Jour. Geol. Soc, Vol. XXXV., p. 305, PL XVII. 



Distinguishing Ch aracte rs. — N a r r o w, 

 curved, and relatively thick base; with a 

 prominent ridge, bearing six obtuse crenu- 

 lations; posteri(3r crest with two stout 

 teeth. 



Found in the Conodont bed of the Genesee, at Section 1 

 ( Hinde. ) 



Fig. 38. Polygna- 

 tlixs cnissus, X 13 

 (after Hiiule;. 



