112 



NEW YORK STATE MUSEUM 



»o 



WO 



o 

 9 



s 



H 



Ss 

 So 



SjO 



oQ 

 o 



OS 



OTHER LOCALITIES 



66 Cornulites arcuatus Conrad 



67 Leperditia balthica far. guelphica Jones 



68 Leperditia ^>. 



69 Calymmene niagarensis Hall - 



7° 

 7i 



c 

 rr 



Dalmanites sp. 

 Proetus sp. 



rr 

 rr 



Lockport limestone 

 Canadian Guelph 



Niagaran of New York, 

 Guelph of Ontario 

 and Ohio 



Summary 



Total species recorded from the Guelph fauna of New York 71 



From Shelby .------.-..-.. j 2 



From Rochester ----....-52 



Common to upper and lower Shelby horizons .-....- 10 



upper Shelby and Rochester ---25 



lower Shelby and Rochester ........ j^ 



" Shelby and Canadian Guelph --26 



upper Shelby and Canadian Guelph ------- 15 



lower Shelby and Canadian Guelph ------- 13 



Rochester and Canadian Guelph - 27 



" New York and Canadian Guelph - - - - -- - -31 



Shelby and Niagaran faunas of New York - - - - - - 17 



Rochester and Niagaran faunas of New York - - - - - -16 



New York Guelph and Niagaran faunas 19 



Shelby Racine, and Waukesha limestones ia 



Rochester, Racine and Waukesha limestones 8 



New York and Wisconsin Guelph 13 



Species at Shelby not recorded from Rochester ------- 19 



Rochester not recorded from Shelby 18 



In considering the relative prevalence of the various classes of organ- 

 isms in these manifestations of the Guelph fauna in New York we observe 

 that the several classes have the following distribution : 



