244 



NORTH AMERICAN INDEX FOSSILS. 



P. punctatus Hinde Genesee (Fig. 1536, d) ; 51, P. tuberculatus 

 Hinde Genesee (Fig. 1536, e, /) ; 52, P. cristatus Hinde Genesee 

 (Fig. 1536, g) ; 53, P. palmatus Hinde Genesee (Fig. 1536, h). 



Fig. 1535. CoNODONTS. a, Polygnathus coronatus, X '4 5 <^5 ^' solidus, X I4> ^> 

 P. crassus, X ^A- (After Hinde.) 



Xn. Prioniodus Pander. 



Jaw with narrow basal portion, supporting numerous delicate 

 denticles, and an elongated tapering tooth which extends below the 

 basal portion. Ordovicic-Devonic. 



Examples: 54, P. radicans Hinde Chazy (Fig. 1538, chc) ; 55, 



Fig. 1536. Plates associated with conodonts : <7, Polygnathus pennatus ; b, P. trun- 

 catuSy var. ; c, P. truncatus ; d, P. punctatus ; e, /", P. tuberculatus ; g, P. cristatus ; 

 h, P. palmatus. All X 14- (After Hinde.) 



P. elegans Pander Lorraine (Fig. 1538, d)\ 56, P. abbreviatus 

 Hinde Genesee (Fig. 1537, a); 57, P. clavatus Hinde Genesee 

 (Fig. 1537, h)', 58, P. erraticus Hinde Genesee (Fig. 1537, c)\ 

 59, P. armatus Hinde Genesee (Fig. 1537, f, g)\ 60, P. angulatus 

 Hinde Genesee (Fig. 1537, K) ; 61, P. panderi Hinde Genesee 

 (Fig. 1533, a) ; 62, P. alatus Hinde Genesee (Fig. 1533, h). 



