Weller — Kinderhook Faunal Studies. 49 



III. Freestone of central Ohio. Base of Logan Group. 

 Chonetes illinoisensis . 

 Syringothyris carteri. 

 Crenipecten winchelli, 

 Schizodus aequalis. 

 Sanguinolites loehsterensis . 



In his correlation of the Ohio formations in the Waverly 

 Series, Herrick* referred the third or highest of these divisions 

 to the Kinderhook of the Mississippi valley, the two lower ones, 

 I. and II., being considered as equivalent to a part of the Che- 

 mung further east. In the Northview fauna, species from all 

 three of these divisions are associated, there being a larger 

 number of species from the two lower ones than from the 

 higher one, which would seem to indicate that the Kinder- 

 hook division of the Waverly in Ohio, should include more 

 than was allotted to it by Herrick. 



The following five species in the Northview fauna are also 

 present in the goniatite beds at Rockf ord, Indiana : — 



Chonetes illinoisensis. 

 Produ ciella conce ntrica . 

 Oardiopsis radiata. 

 Tropidodiscus cyrtolites. 

 Tribloceras digojiurn. 



There remain three species in the list of twenty-four, which 

 have not been mentioned. These are Schizophoria swallovi, 

 Orthothetes chemungensis, and Palaeoneilo constr^ictaf The 

 first of these is typically a member of the Osage fauna, but 

 the Northview specimens are somewhat intermediate in form 

 between the typical species as it occurs in the Osage, and jS. 

 impressa of the Chemung fauna in New York. The last two 

 species are Devonian, and normally are members of the 

 Hamilton and Chemung faunas in New York. These two 

 species having a Devonian aspect, however, are not alone in 

 the Northview fauna. The presence of a species of the genus 

 Modiomorpha which has so great a development in the New 



Geol. Surv. Ohio 7 : 495-515. 



