154 



crested teeth | Fig. 34, k, /). Hinde's figures are here repro- 

 duced. 



Pectinate Teeth, A. (Fig. 34, a—d.) 



Distinguishing Characters. — Narrow, slightly arched 

 base: main central tooth sometimes produced below in ;i 

 spur; denticles slender and acute, fourteen to twenty. 



Found in the Conodont bed of theGenesee stage, at Section 

 1 (abundant); in the Genesee shale, Section, 1 (?) (Hinde); 

 and in the upper Moscow shale, at Section 1 (rare). 



Pectinate Teeth, /*'. (Fig. 34, e—g.) 



Distinguishing Characters. — Straight, almost linear, base; 

 teeth all similar, central one longest, sometimes as ninny as 

 fourteen : occasionally smaller denticles between. 



Found at North Evans, in the Genesee shale. ( Hinde. ) 



Fimbriate Teeth. (Fig. 34, h. i.) 



Distinguishing f 'haracters. — Straight, narrow, elongate 

 base, pointed at one end; delicate main tooth near blunt 

 end; denticles, three on one side: very many extremely 

 minute ones on the other side, often varying in size at regu- 

 lar intervals. 



Found in the Genesee shale, at North Evans. Section 1 (?). 

 (Hinde.) 



Crested Teeth. ( Fig. 34, k, 1. ) 



Distinguishing < 'haracters.— ( .4 ) Compressed base < >f nearly 

 uniform width; one end abruptly contracted; crenulations 

 (denticles) about twenty. ( Fig. 34, k. ) 



(B) Part of base narrow and thickened, with sometimes a, 

 row of minute crenulations on upper edge; remainder of base 

 small: flattened crest, with five to eight denticles. (Fig. 

 34, /.) 



Found in the Genesee shale, at North Evans. Section 1 (?). 

 (Hinde.) 



Plates. — Small, elliptical, smooth-edged plates, with 

 one surface slightly convex, bearing a longitudinal ridge, mid 

 having a granulose surface on one side and a smooth one on 

 the other, were found associated with the above teeth at 

 North Evans, by Hinde. (Fig. 34, /;/. ) 



